i'm pretty new to forced induction & am interested on building a small block chevy with 500hp & 500#ft on pump gas. is that possible, even easy?

 

It's a lot of fabrication, as there's surprisingly little in the way of quality bolt on parts for turbocharging a small block out there. (There are some cheap headers on eBay that can be a bit leak prone and often don't fit the applications they're advertised for.) But it is pretty straightforward; a good 350 won't need much boost to hit those numbers.

 

I'm starting to do the same thing and Matt is right, even if you get a full ebay kit, they seem to ignore the exhaust end of the turbo and you end of with lots of fabrication.

I'm thinking about the OBX up and out headers, an Edelbrock 7137 Pro-Flo XT intake and Edelbrock fuel rail for starters. The rest I'm probably going to fab and use a precision turbo I have laying around. I'm also looking in the modest 500-600 HP area and again, Matt is right again. Should be no problem, maybe 15-18 lbs of boost. You must intercool it for pump gas. I'm probably going to make mine e85 friendly so I can romp on at the track, so I'll be looking at 60# or bigger injectors.