318 boost

thanks my next step is to try to find out if a thermoquad or a q-jet is that much better carb than a holley. its just a daily driver with highway gears so there is no need for od. tinted windows, flattened out paint, black steelies, good stereo and the wonderful music of a 50 series flowmaster. you didnt mention. are they a direct bolt on or do things have to be modified? thank you so much for your time, dt