OK finally to to put this to rest. The cast code # is 9790071. YC, Acording to Pontiac Power here is the details. B-body, Year 1968, CID 400, HP 290, Trans Turbo 400, Carb 2bbl, Mains 2, Well at least it's the correct year:):) Now if I can just find out what was originaly in it, then I can start looking for the correct matching motor. I'm in no hurry as the car runs great, and I don't plan on parting with her for quite some time, but it's always good to put feelers out there. As soon as my PHS docs. show up I'll let you all know the code, I'm pretty sure it's a WK, or WR motor, anyone have a few of these laying around??:):) Thanks so much for all the tips, this site is awesome.........."WHERE"S MY AUTO TRADER MAGAZINE"