Small Block, 426 Hemi, or 5.7 Hemi
(where's the duck and cover smiley??)
All kidding aside, what about a turbo small block? Couldn't be an easier install since it's all bolt-in, a turbo could turn a very basic 318 into a monster, and if you use aftermarket efi you could easily tune it for both power and economy.
Btw this is the 3rd thread you've started asking this same vague question.
(where's the duck and cover smiley??)
All kidding aside, what about a turbo small block? Couldn't be an easier install since it's all bolt-in, a turbo could turn a very basic 318 into a monster, and if you use aftermarket efi you could easily tune it for both power and economy.
Btw this is the 3rd thread you've started asking this same vague question.