You know I have advocated for this for years. Its been ingrained in this forum for years that you must have an aftermarket block and only premium parts to build an engine that makes more than 700 hp. It has limited the people and cars on here for a long time. I gave up.
Spend money on the parts that make the magic happen... EFI, distributorless ignition, and a turbo or two. A 900 hp engine can easily be built for less than 10,000 complete and running if you buy smart.

"use it 'till it breaks, replace as needed"