what is the difference between the F41 SUSPENSION AND THE FE3. i put a tire on a 09 buick lucerne and as i put the spare back i looked at the list of RPO codes and noticed the F41. can i use the suspension from this car and also noticed that it has the same size rotor but a dual piston caliper it was a 3.9L v6

IIRC F41 was a stiffer riding suspension than FE3.

Mixing and matching suspensions from different GM cars is a crapshoot. Will the holes line up? Will the caster and camber be affected, and can they be adjusted to work. ??? There isnt a "Book" and I dont know of anybody thats gone further than switching one Bonneville suspension for another. I've checked in Rock Auto'* very comprehensive online catalog for suspension part matches between models and didnt find any. Their catalog is a great tool in finding like parts. Find the part number that fits your car, put that number into search, and the search will tell you all the models the part works on. I have found quite a few parts that are interchangable this way, but not the suspension. I have heard STS springs (unconfirmed) work on the struts on later models, but other than that, I dont know of any other interchangibility.

John.. this is a job for (dumroll please)

Pat

If anyone knows what can be mixed, matched, size and length... he'd know.