i bought a cfm airbox and they sent me a carb boot for like 28 to 33mm carb and i have a 34mm carb. i told them so they sent me one for the carb i have and it still didnt fit. so i complained to them and they said thats the one for me but it had like a 1/4" gap around the carb where the boot is suppose to fit snug to. they told me to put the smaller boot inside of the other boot to make it work. but its a total pain in the ass because it doesnt want to fit right and then gas gets in between the two and makes it slippery. anywho, i always hit this guy up AWK for answers to my probs and this guy is a huge HELP! so if u guys need help dont tell him i told u so lmao. anyways he gave me this website called siliconeintakes.com. so for future reference if u buy this cfm airbox, do not get the 34mm carb boot from cfm, get it from siliconeintakes.com the have prolly any size u need. reps for awk, thanks buddy