hi guys

Been speaking to an ex HD owner over here in the uk

after telling him whats been done to my truck he said ill be getting belt slip ,after checking around the snout it has black dust so it looks like hes right

My truck has what looks like a stock lower pulley measures approx. 7 3/4 across the outer edge
The upper is 2 3/4 in size

am i better just going for the deuce idlers or go for the aux one that's higher up.. theres approx. 50 pound difference to get them to the uk