Actually, Rochester built a good bit of 1.69" throttle bore 2bbls starting in 1957 Pontiacs and included 1972 Chevy 350s. The 500 cfm Holley 2bbls used the same throttle bore diameter. The Chevy 350s I drove with those big Rochester 2bbls ran almost as good as a 350 with a QJet on it, so I was impressed with that. The Doug Roe Rochester book explains how to tweak them to diable some emissions calibrations and other little things from the middle 1970s, too. If I wanted a "bigger" 2bbl, one of them would be my choice. Same base gasket bolt pattern as the 1.56" 2bbls, AFAIK. Just need to enlarge the flange holes in the manifold.
From my experiences with the WWC3-262 on our '66 Newport 383, they were all prone to air horn deformation from an over-tight air cleaner wing nut. When that happened, it compromised the sealing of the rear of the float bowl AND the one vac passage to the power valve. I used two air horn gaskets to build a gasket that might compress enough to compensate for "the warp". Carter BBDs did not have this issue due to the way their air cleaner stud was attached via that "thick wire" holder.
I did like the look and engineering on the WWC, though. But the new replacement Holley 2210 from a 1970 383 ran better and got better highway fuel economy on that car. Holley/Chrysler also had a "fix kit" for the air horn warpage that worked.
Enjoy!
CBODY67