thermo-quad question.

This is the wrong carb for you application, it is good for stock engines and a mild cam at best. This emmissions era carb has a EGR port (Brass fitting) and a idle compinsator (SP!) The tube yp front with the 2 screws holding it on.

The Thermoquad on my GTX was good enough for 11.27 @ 124 mph

The quad is a good piece, you need to learn how the systems work to effectively tune it.