Single Turbo '65 Valiant Build

Turbo sounds like an s475, if you arent dead set on the 318 now would be the time to step up to a 360. There are quite a few of us running carbed 5.9 magnums, of the ones currently completed and running they are all seeming to get great results and power. With the added stroke you might find spooling that turbo not as daunting of a task as with the teen.
Problem im having is i have several 318s laying around and 2 brand new boxes of TRW .030 forged pistons id like to use. If the 475 is too big im sure i can sell it and downgrade. Im trying to find a tried and trued 318 turbo recipe. only reason i was going to use the 475 was because i had it. Like I said any and all help is appreciated