For some reason, people don't seem to ever compare apples to apples in this situation. "I only want to build a 600hp big block, because there are no good blocks available to build a 1000hp turbo motor?"

There is a REALLY nice 500-800hp sweet spot for cost effective turbo builds. You can take mostly factory parts and with a little fab work and knowledge, build a very nice 10.0 combo (Which the masses trend towards to stay away from the roll cage, cert, NHRA license, etc...)

That being said...
People are scared to try and fabricate
People are intimidated on how to tune (Fuel vs. Timing vs. Boost)
You WILL need electronics to make a good bracket car (Trans brake, boost controller, etc...)

Mine has now been together for over 8 years and been in the 9's since August of 2014. I would say it's probably never made under 550~600hp in it's entire existance, and probably up close to 900hp when set on kill occasionally. Most the time it lives a nice happy 750hp life as I usually run it right around 9.90 or so.

Same stock 360 block, same stock 360 crank, eddy heads, .540 lift hydraulic roller, 3.55 gear.