I used Barge contact cement, but the parts that wrap around the edge kept pulling up, so I just used a bunch of super glue. Its been that way for a while now and problems yet.
Tmax (Terry) just took that pic a couple of days ago. My bike is currently sitting in his garage waiting for gaskets and some other small bits needed to finish the big bore install. He installed the freak for me as well, and I think the air cleaners showing through the cheese graters looks pretty cool. I can't wait to get her out on the road!