Just putting together a idea of a easy way to boost a 318 in a D-150 4 speed. To make it easy say the inner fenders are removed for space, and only need 4-5 lbs of boost.

Try to keep the oiling system independant, so no tappin the V8 pan. No special intake manifolds needed just a closed box carb lid. Turbocharging with a all in one style T3/4 turbo. If they make one for that size ?

A electric fuel pump with rising psi control for the boost will be needed. That is understood.

If its a turbo can you just route the stock exhaust r+l y pipe, back to the turbo inlet. Instead of a expensive header system with turbo mount.

What is the Caveman way to run a non intercooled turbo 318?

pro charger

if you want caveman i remember in my youth seeing a early '60's english ex police car with electric blower!!. no BS, this english 6 cylinder had a round fan section ducted into the carb. on the inside there was a toggle switch marked "pursuit" which turned the fan on. in it's day i'm guessing you got another 2 mph with this working. much cheaper these days to duct in some fresh air.

Turbo would be the best, they need some kind of oiling system though..It doesn't take much...1/4 tubing, and just route a return some were easy like the fuel pump block off plate.
Turn the manifolds backwards etc...
It wouldn't be hard to make a adapter plate from steel if you have any fab'n ability and a torch and welder.

http://www.bvmjets.com/

No expensive jets.