Got me a new truck with a slant Six, what should I do?

It looks like someone has but a larger exhaust o n it alread (looks larger).
JMO... the cost of going V8 cost more then a couple modes ..
I believe a V8 trans, mounts,drive shaft,318 eng,exhoust all the trimming will
cost more then what C130 Chief said Quote = An Offenhauser 4bbl intake and a Holley 390 CFM carb is a good starting place. Shouldn't cost too much more than a V8.

Upgrade = change plugs, intake, carb ........... tune and drive... It will get better MPG and have a few more ponies.

If this was my truck there is no way I would put a V8 in it.. Very nice truck.