Should I use this M20 engine?

[mr2peak]

Swap an M52. Use your future turbo money for ARP hardware and do a nice, clean swap. It's enough power stock (+70hp over m42) and will hold a TON of boost later if you want to go that route. Factory forged internals, etc. It will be much cheaper to make huge power than an M20.

And if you leave it with a stock M52, you can also pass smog