I would think you would want to visit a Keystone dealer or find an RV Show where you can see and touch the modifications you have in mind. The measurements may be different, you may have to cut holes in the floor to put the receivers in for the table legs, you will have to procure the hardware to modify the chains to be able to mount the seats and fold them up. If all the components will adapt to your current installation then I would think a dealer could order all the materials needed.
We have the ’08 Fuzion 373, 12’ garage, 39’ long. It slept 10 when we brought it, it now sleeps 2. We got rid of the jackknife couch and the bench seat from the living room, replaced them with two recliner chairs and a built-in computer table. We changed the loft into a storage area; in the garage we got rid of the lower bunk, moved the upper bunk down to those pegs, reinforced the former bed area with plywood and made it a second storage area. The motor which raises the bed is not strong enough to raise the weight so it is necessary to raise it in stages so the motor won’t fault out.
Your welcome in advance.
We full time RV in a toyhauler, Fuzion, 39’ w/12’ garage. Putting the ramp door down is not always possible in every park because of space available, with the ramp door down your interior privacy is compromised as well as your cooling/heating system. If you have a generator in most parks you can’t run it, and if you can you are restricted to day use only. Boon Dockers don’t have these problems as much.
You need to measure your ATV from front to rear and outside wheel to outside wheel. A 12’ garage is 144 inches in length X 96 inches wide. Most RV’s are not designed to pull a trailer that is not to say it can’t be done, it is done successfully all the time, but if your unit has any warranty left you will find that most manufacturers will void the warranty when you add a rear hitch to the unit. Many toyhaulers have a wide frame and will rack and twist as you travel and the added weight causes more stress on this type of frame. Keep in mind that the manufacturer has a reason they don’t warranty add on hitches.
Keep in mind that for every foot of garage space you have it reduces the living space by the same foot. Be sure you have an interior wall between your garage and living space; this serves the purpose to keep the toy smells out of your living space as well as adds support to the exterior walls so you don’t have the semi-trailer effect as you pull down the road.
You have many replies here, some of them are even on point.
Hope my reply sheds some light on your question.
We just replaced all seven tires this week on our Fuzion triple axle. We had been looking for over a year and were not convinced that buying the higher priced USA made brands was worth the expense. We had Mission tires and read all the china bomb information but didn't see any of those problems. Our Missions were at least 5 years old and were ST225/75R15D 8 ply. What finally pushed procrastanation out was the controlled braking traffic event on our way from Texas to Oklahoma caused one tire to shed it's rubber, we changed that but what we failed to realize was the the steel belts on the other side front axle tire had broken and after we pulled another 500 miles that tire shed it's rubber and that caused the weight on that side to be more than the rear tire on that side could carry and it shed it's rubber. So there we are on I35 in Oklahoma, 40 miles from any town and on the shoulder with two blowen tires with a 39' toyhauler. I know you didn't ask for all this dramma but you need to know just how serious your tires are, we were lucky the flying rubber didn't destroy our fender skirting but did rip our brake wiring out on two wheels.
We went with another china tire called AKURET they are ST225/75R15E 10 ply. They cost us $103 each. So I guess we will see how well these china bombs hold up. We do keep our tires covered when we are parked and we usually are parked for 4 to 6 months at a time. Note we moved to and E tire and added 2 more plys when we got these AKURET's.
Good luck, don't procrastanate to long. Stay Proactive.