[19bonestock88]

Agreed, if you invested any real portion of the cost of swapping an 8L90 but not also it’s LT1 mate I to your van, you could really optimize the aero on it and likely get your 20mpg Highway with a simpler powertrain...

I’d look and see if anybody makes a stand alone trans controller for the 6L80, which would be a cheaper solution than the 8L90 and likely *almost* as good... I don’t see you needing that super low 1st gear unless you’re towing or something...