I have a 1989 pontiac sunbird and am wondering if a 3.1 litre will fit on the original 2.0 litre engine mounts?
they didn't put a 3.1 in a sunbird till 91 so if the subframe is the same
as a 91(can check with your local wrecking yard to cross reference
this)then the motor mounts are easy to get if they don't match up
you may have to change the coil springs to support the wieght of the 3.1 compared to the 2.0 new front exhaust pipe/ecm/transmission? etc etc for the 3.1