depending on how your brackets are i had to make an L bracket and a Z bracket it sits a little lower ,the 2 1/4 inside diameter i think tubing pretty much runs straight across from the air box to the carbs it gets set back a little so the air box doesnt touch the exhaust mine just misses but once bolted in it doesnt move just used the 2 back brackets drilled 2 holes in the air box on each side used washes and lock nuts and tightened up very very easy to do 2 little brackets 1 piece of 2 1/4 hose 6-10in the most or 1 radiator car hose 2 1/4 and cut the 2 ends off that ,thats what i did 6 bolts , nuts and washers and 4 hose clamps, hope this helps if you have anymore questions ill pm you my cell give me a call tomorrow