Tony,
I have a 1971 Hooker Catalog.
The Hooker numbers:
Part # Makes and Models Years Engine Tubing size Collector Size
2385 Camaro 67-69 396-427 2 1/8" 3 1/2"
2386 Camaro Adj 67-69 396-427 2 1/8" 3 1/2"
Chevy II Adj 68-71 396-427 2 1/8" 3 1/2"
2387 Camaro Adj 70-71 396-454 2 1/8" 3 1/2"
There is "no" Hooker # 2388 in this catalog.
Sorry, I couldn't help you.
Mike
