Here is what I put on; just the crank pulley. At higher RPM (track), the power accessories turn slower, a plus, and in a small way, reacts like a lighter flywheel allowing quicker engine acceleration. (RPM). Have had it on for 3 years.
*****************************
Here are the specs: 1996 RT/10 Gen 1, with Air Condition.
Stock Pulley (with Air Cond.) 2 lbs. 7 oz.; 7 in. Dia; 77.6 in. belt (7 rib)
25% under Aluminum Pulley: 1 lb. 0 oz.; 5 1/2 in Dia.; 74.7 in. belt (6 rib)
(Requires purchase of shorter belt - any auto parts store; price $20-$35)
Runs good and charges at 14 + amps with AC and Radio, a slight dim when lights added at idle, but recovers instantly.
Later,