Todd. I am looking into using a GM 4 cyl 151, 153, or 181 in a roadster project. Jeep used the 151( 2.5 iron duke) for several years. The bell housings from V8s bolt up and the jeep bell housing has a Ford trans bolt pattern. I guess this also means that any auto trans that bolts to a SBC will fit the 4s. This engine family has a lot of potential. The 181 Mercruiser makes 140 HP! Clifford has manifolds and cams I think. Tom
