FWIW, the 4L80E was made from 1991-2013, tons of cores out there in GMC, chevy light duty trucks and medium duty motorhomes etc. Up to 18,000 lbs chassis. A stock 4L80e is nearly as strong as a built 200 is, more work initially, but reliability is worth something.
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Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix
100% Pontiacs in my driveway!!! What's in your driveway?
If you don't take some of the RACETRACK home with you, Ya got cheated 
  
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