It just ain't easy to remove the spring towers and bolt in a different suspension - unfortunately. Once you totally remove those sheet metal weld fabrications, you have lost most of the engineered front end strength of the car. That car has a unitized chassis/body which means that to successfully install that kind of IFS (MII clone) and make the car reasonable functional, you will have to come up with some sort of sub frame that extends at least under the floor pan and even better, to the rear end. This of course ends up with a full frame as the rear part of that chassis is....a bent up sheet metal frame for - that original screaming 165Hp 221 or 260cid engine or that overwhelming power from the 144 or 170cid I6.

A Cleveland engine is a great choice - but it just doesn't fit every car without LOTS of design and physical work which isn't for the faint of heart