Well, make that 3 votes for the LRP z.28 spec 3. Great motor for the $$. retail is $175, but you can find em cheaper. I race and have like these engines as well or better than many of the high dollar engines I've owned. I'm on my second one, got prolly 10 gal+ of balls to the walls racing out of the first in a LST2. Still runs, just lost some pinch. Economical, easy to tune, holds a tune, last long, and STRONG!!! great combo of torque and top-end.