2-3/8" x 8-5/8" flared port tube

The flared design of these port tubes is far superior in looks and performance to the straight designs you normally see.

These are 8-5/8in long, start out at 2-3/8in diameter at the rear and trumpet out to 4in diameter at the front, and it'll press fit nicely into a 3-3/4in diameter hole.