I heard the same about the "CAT" blocks. A guy down around these parts had one of Geoffrions old motors, and you really had to do a double take because it had a Mopar logo or Pentastar or something like that on it, can't remember which.

Wasn't there a blunder about the heads too around '98, '99? The ones they ran before they brought the Hemis in had the exhaust ports spaced like a Chevy or Hemi head, they didn't have the 3/5 and 4/5 paired together lfike a wedge head. I noticed that on Alderman's motor in the pits at Maple grove around that time frame.