Nothing wrong with a Quadra-Jet carb. They take more work than a TQ to get right. There are tubes that need to be "adjusted" to 1.00 inch and you need to clean, bead blast and epoxy the bowl plugs on the bottom of the bowl. Then I use a brass float, look up 69 Corvette primary and secondary rods should get you close for a high performance engine. Adjust the secondary air valve for a slight bog then tighten the spring just a skosh till the bog goes away. They made Mopar throttle arms, but the standard Mopar adapter should work for the throttle and kickdown. Last problem is the choke depending on which one is on the carb. In the end, they are a good carb that will get good mpg and make plenty of trouble free power.