Carb for 408

Hi Rumblefish! I am in Australia and have a 1974 Valiant charger with 410 stroker,five speed tremec and 3.91 ratio borg warner diff with true track centre and 31 spline billet axles. My engine specs are as follows. forged crank, I beam rods, SRP forged pistons, edelbrock heads with home porting and 2.05 valves, harland sharp roller rockers,hughs roller cam 234 @ 50 th, Try why pacemaker exctractors into three inch system.edelbrock 800AVS carb, edelbrock air gap intake. Car runs very mild, idles at 750 rpm with 14 lbs of vacuum. It is a joy to drive until you put the peddle to the metal then turns into a beast. By the way our valiant chargers only weigh 1400 kgs about 3100 lbs. and have a 105 inch wheebase. not much bigger than an early barracuda!