I agree, I built my crossover with 2.25 and would not hesitate to go down to 2inch. There are people making big horse power with 2 inch. 2.75 will hurt spool and be very "laggy".
92 Notch, 351 Windsor, Trick Flow cam, ported heads, edelbrock performer rpm intake, 5 speed,
AEM wide band, 3.27 gear, 70mm GT-45 with home built kit, megasquirt 2 v3.0 Running Extra Code and EDIS