Sixpack on a 318 engine ?

okay i stumpled aver this Six Pack and the price was right. I know a 340s would be cool but the only thing i have is a 318 which i plan to rebuild the cheap way. Hone it, , new rings and so on, a basic re reing job.

What you guys think, is it a bad idea to use the sixpack in this ? And if the answer is yes , what cam should i use?
Car will be a 66 Barracuda with a 904 automatic not sure about the rear end ratio. Converter stock.
Yes! Do it. Send it done. Absolutely go for it.

Cam size determines RPM range that works in concert with your converter, gear ratio, tire size and cars weight to achieve the intended goal.