Did Ford offer a air or hydraulic seat in the cab models ?  I put a air ride seat in a 4230 JD 4-post tractor . Must of had it 10 years that way . Never had any issues with compressor .  And I also put a JD hydra=cushion suspension from a cab tractor in a 4430 4-post .  Took a little fab work in the seat wells . But wasn't  too bad of a job .