You're right about those elemental experimental years in lunacy. I always thought that a Colt with a Hemi was pure evil, but a more reasonable and manageable package would be a small block 360 in a Colt.
Talk about lightweight, the only two that comes to mind at the haunts for me is a Pro-stock Pinto with a 427 and later on in the 90's a MG midget with a Buick GNX 6 literally protruding out of the hood.