ok. your first post said you had a 2" shop vac hose. i assumed you meant a 2 1/2 not a 1 1/2. i don't have a clue about that but i know a 2 1/2" will work great and it will slide into the female end of a 2" black pvc 90 degree elbow. it'll be easier if you run the larger hose and will allow more air into your bike.I don't have 2.5" hose. I have 1.5" hose and 2" pvc.
the hose flows. i just redid mine putting it coming out the oil cooler area on the front. i needed a 90 degree and 2 other pieces. everything else running to top was 1 pice of 2 1/2" shop vac hose. it squishes down and no cutting and no problems.or fight hose and connections?