buy a 350, when my l-69 305 started to rod knock, i went to a local salvage yard, and got a strong running 350 out of a 79 g-20 3/4 ton van, i put headers on it, good ignition, the 305s intake, and some other small things and it ran great, pretty quick to, now ive got a 60 over 350 with around 450 flywheel horse, the van motor worked great though
