The quadraject carb can be mounted anyway you want to mount it,except upside down. LOL
You need an adaptor plate regardless of what carb you run on either manifold.
The standard 4 BBL adaptor plates on both intake manifolds need work/porting/blending. Not so much if you are useing the 2 bbl to 4 bbl adaptor.
I used the Quadrajet carb for a Sprint 250 engine also,did not like the results
I used the Quadrajet carb & Thermalquad carb on both the Clifford & Offy intake,yes, both were speard bore patterns.
MBHD
