I have a 86 F250 6.9 L with an ATS turbo. It definetely has power to pull a house but the rear end gears are 4.10s so getting to 65 mph will put the truck at 3000 rpms or so which is pretty much its limit for highway driving. It will pull a full load up a steep grade but flat land is about 65 mph limit. Might want to evaluate your gear ratio as well if you shell out the $ on a turbo. They came with 3.55 gears that will drop about 500 rps or so off allowing for a little better highway driving.