I thought it could be a great idea. I have what most people consider to be a "wild" setup and I bought an LS1, built it, and fabricated the ENTIRE twin turbo setup that I have now for under $14k, and that was using all 321 stainless!.(Was cheaper but I bought some REAL pricey new turbos).
Ive seen crate motors cost more then that! A true complete twin turbo setup AND motor build would cost less then $10K for 800 hp! And the setup would get over 20 mpg!
Might be something to toss around.