Pro-Werks...hecho en USA

http://pro-werks.com/categories/18616/

I've only used the weld-on bungs, but the sell bolt on flanges as well.

Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater