The 1980 - 1982 Jeep 4 cylinder (Iron Duke) was a GM engine. The bellhousing from a Jeep Iron Duke 4 cylinder has the same bellhousing bolt pattern as the Small Block Chevy. The NP 435 and T-18 can be bolted to the 1980 - 82 Jeep 4 cylinder bellhousing. The Jeep Iron Duke 4 cylinder bellhousing will allow the use of the Camaro 10.4" clutch. The Jeep Iron Duke 4 cylinder bellhousing used a hydraulic clutch, with the slave cylinder bolting to the bellhousing.