lightest a-body??
My 68 barracuda coupe had a mild steel headed 383, 4spd Mcleod scattershield with centerforce dual friction clutch setup. TTI headers. It had a team G aluminium intake but the rest was pretty much stock except for the two batteries in the trunk. It had steel wheels in the back with M/T 29x9.5x15 slicks. M/T 28x4.5x15 on front wrapped around torque thrust D's
Inside was gutted with a 6 point roll bar, aluminium door panels and aluminium back seat panel. It had the stock dash with no top pad and minimal gauges and tach.
Underneath were superstock springs, 75 dart front brakes, and discs out back on a Dana 60 that was stock width with bear axles and spool.
the body had fiberglass fenders, and lexan front and rear windows. the inner fenderwells were still there. I ran with no hood.
I had a small 4 gallon fuel cell up front and the car tipped the scales at our NHRA National Open at exactly 2925lb without me in it.
Hope that helps.