[ERA Chas]

I saw a 427 Windsor w/ 1 7/8" make 706HP and 630 TQ at 13.5 on race gas.
Also saw 460 Windsors make 630 to 647 HP and 630TQ on pump gas w/ 1 7/8"-every week-dozens of them. Both types of builds ran 1050 Dominators also.
You will lose torque w/ 2" and have the fit problems described by Peaks.