If you have some tubing you could make one of these on a smaller scale and just use rubber at each end.

http://www.hotrodscustomstuff.com/Cars/Road%20Tour%20Car/SR%20Guide/final-05.jpg

They do make 45 degree fittings for the intake, but I'm thinking the odds of getting it clocked in the right spot and tight enough at the same time aren't very good, plus it might look kinda half-arsed.