Belt type for UD alt pulley?
 

Just curious as to what type of belt (diameter) people are using with a RB UD alt pulley with no A/C, PS, airpump or can you tension the stock belts enough? Thanks

you can tension the stock belt that drove the alt enough. or go one size smaller. which is what i did. bring the stock belt with you when you go buy the new one. They should have a measuring stick.