Scream'n 318 ?

I have a friend that's putting together a Nova with a 454 ..... It would be fun to beat him with a 318 in a D150...
a BB nova gonna be 3500lbs curb weight, thats 500 lbs lighter than my lil plan jane /6 D150 curb weight!! and the truck got the aerodynamics of a brick! idk if a mild geared,generic cammed 2 bbl 318 gonna out pull that! whats your plans for exhaust? cast manifolds??