1991 Fleetwood Pace arrow - Seat mounting
I have a 1991 Fleetwood Pace Arrow 34, on the Ford / Oshkosh chassis. It came to me as a project ("free" as in no cash for it, but traded a pop-up and it instantly needed $1800 worth of tires to get it off the land it was no longer welcome on >_<). It's needed a bunch of other work, most has been relatively sorted out.
One of the issues remaining is that there was no passenger seat / pedestal, just the driver. I picked up a pair of seats off ebay, and a seat pedestal off a surplus site (it was new, just cheaper than elsewhere I'd looked - it still has seatbelt mounts and can swivel). I didn't look closely enough, though, and the bolt pattern on the base is different than on the MH floor (the mh appears to be roughly the same 8x11 that the seat is, the base of the pedestal is 7x7)...
What's the best approach to fix this? I can try to find a salvage place that has an original seat pedestal, I can try to fit a steel plate (roughly 9x12) (that would use the factory bolt holes, through the chassis / frame) and bolt the pedestal to that, or I can use 12 x 3" plates as "adapters" to still get a steel-to-steel mounting point - the only real reason to try the last would be that I could pick up the steel I'd need from Home depot, no need to wait for shipping. Lastly, for either option, would 1/4" be strong enough? Or overkill?
Lastly, I'd like to turn the driver seat around, but the wheel gets in the way. Would a wheel disconnect be an option? I know they're "legal" so long as they lock the wheel on, but is it a _good_ solution? Or is there anything I'm not thinking of? I know I'd need to find another solution for controlling cruise control, and there's no airbag.
Sorry if any of this is hard to follow, I tend to overcomplicate things sometimes... And thanks in advance for any help or guidance!!