318 Build For Now
Find a low mileage 5.9 magnum probably the best bang for the buck it pulls pretty hard in my Grand Cherokee in a A Body it would be a rocket. The old 300hp crate engine was a stock 5.9 longblock with M1 dual plane and on the dyno with headers made 320hp and the 380hp Crate engine was with M1 single plane and healthy cam and dyno 400+hp with headers.