If you can find the threads on here about the dyno testing done a while back, you will see the 292 that made 300 HP with 8.8:1 compression using basically just bolt on performance parts commonly available to anyone. I think that engine would still be rather streetable for most peoples taste. If you plan to use it for both N/A and forced induction, you will need to observe a compression ratio at or near the 8.5:1 range as this engine has, but still 300 HP or more is relatively easy to achieve with pump gas level compression, which was the main premise of the dyno testing to begin with. Tlowe has a street driven 292 that makes upwards of 450 HP with a turbo, so you can get some impressive power out of a 292 or even a 250 with the right combo of parts. A 250 was even dynoed with a budget turbo setup using only 5 psi boost and yielded 350 HP. And it didn't even use a turbo specific camshaft. So with a more refined specific cam and higher boost level, 400 HP+ is not hard to achieve, and still be driveable on the street.
