Id like to see some flow bench testing on a few of the cleaner that fit the 94 and 97 carbs. I'm pretty sure they all restrick air some. I have the tall K-N cleaners on my dragster ( 3 of them) but they cost about 35 bucks apiece. I need 4 for my 4 carb set up going on my 40. I've got to sell a few more soda cans. Walt