mid 90's older style truck umm 90-93 ram 1/2 and 3/4 ton and I think the other 2 I scarfed up were from a full size van 90's. all of them are just a hair to thick to fit in the rear convertible only section using the regulators Hard tops and sedans have a bit more room and a different regulator that's smaller(doesn't have that big bulky bottom piece) so one of the ram truck motors woulds fit, but it would be darn tight.