[spence88mph]

If you want super cheap and little fabricating, a j-pipe and 2nd hand but in good condition k27, T03 etc would be a very cheap route, j-pipes $150ish, turbo $200-$500 (ask around in here, I'm sure there's a tonne of turbos sitting on shelves from upgrades) for your low boost level no problem.

A buddy had a supercharged 911, the sound was cute to begin with but very annoying after a while... Belts broke constantly too as I've seen happen to other members here, having to fabricate brackets etc.... well I'll leave that to you.

BTW I did my turbo conversion in a sunny afternoon and was driving it that night...

Harder to stage build a turbo, in what way?

You don't need an intercooler or BOV under 7psi .5bar.