NJ WTB: Aluminum bellhousing

[jocko]

yep, that's what you need - 621. Understand you probably want an original gm and it will cost less than a new one - but this company makes new repros and they are high quality. if cost not a HUGE factor, might consider one of these. Has some minor improvements over a 621 i believe - I saw these in person and met the owner at the LA Roadster show last year, looked like a very high quality part: http://www.americanrebelmfg.com/bellhousings/ The confirmed minimal runout is a nice-to-have...