Quote:Sure, all things being equal it would be 7% or less ... so if you don't want the best, using an A14 won't be too far off.

The torque may not be much different, but the torque curve would be significant adding power throughout the low and mid ranges. Some A14s have less power, some more than other A14s due to cam changes, and I expect the cams are different with the A15s. Build 'em up the same and see what you get.