I agree with Thunderbolt...I have gone to the 5/32 vacuum lines and can't put the clamps back on. They just won't go over the outside of the tubing (thicker wall material than stock). You can pick up the tubing in bulk at any auto parts store.
If you are running stock tubing and are aggravated at the stupid little spring clips...here is a vast improvement...
http://redeye.ecrater.com/p/14344948/7-mini-hose-clamps-for-valkyrie-happyI also buy the vac caps and intake o-rings from these good folks.
Joe