Hi Scott thanks for your input. Id be interested in your 72 TQ 6138 carb my car is a facory 4-spd restored to new. My compression is already 10:5:1 all new cant replace with lower compression pistons so ill have to run what i got. I plan on using 94 thats the highest fuel octane we have here in Canada.What intake and heads do you recommend i use. My builder said a Edelbrock performer RPM and alum heads i was thinking of a LD340 and whatever alum heads that are a good value for the $$$