I'm planning on using the 100 amp RX -8 alternator in my Reneses powered RV - 7A.  I'd like to slow the alternator speed down to below 10 k rpm.  Does anyone know of any pulleys in the 3 in diameter range that would fit this alternator?   It uses a superentine belt not the "V" belt.   Also I'm planning on using the Aeroquip FC 332 socketless hose for my oil lines to a  RX - 7  oil cooler.  Has anyone found a source for the barbed hose fittings with the 18 mm X 1.5 metric threads?  All I have found are 1/4, 3/8 and 1/2 pipe threads with barbs.

Thanks,

Dennis H.