302 is the casting number. they have small valves and are about 62cc`s. most easily found on 80`s grand furys/diplomats/trucks and vans. easily ID`d by their heart shaped combustion chamber. if you go to the junk yard to pull them yourself take along a set of metric sockets to remove the exhaust manifold bolts. they get rusted so bad std. tools will not fit and they you are stuck not being able to remove the ex. manifold.