Who builds reliable race/street engines?

The 318 in my Demon is a dog. I don't wanna bother with it. My mechanic likes Blue Print Engines, but some old posts from Chevy forums say not that great. I also read about their 408 stroker, but some of the components seem weak. For instance, the mains are two bolt, and the crank is cast, while the pistons are forged. Doesn't make sense mixing good with cheap.
Mopar 408CI Stroker Crate Engine | Small Block Chrysler Style | Dressed Longblock with Carburetor | Iron Heads | Flat Tappet Cam

Anyone have a link and experience with reliable crate engine builders?

Goals:
1. $7k max budget for complete engine
2. Minimum 300 hp to 390 hp
4. Unsure about proper torque
3. For race 3-5 times a year
4. Street cruise