6L90 Duramax transmission fits 2013 to 2019+ - $2,000 (Huntsburg)

6L90 transmission out of a 2014, 4500 Chevy cutaway transit bus with 6.
6 Duramax engine.
Transmission was completely rebuilt with all upgraded parts from GM.
See work order from shop that did the R&R and rebuild.
Rebuild was done 6/18/21 and tranny now has 29,000 miles on it.
Buses are driven by retires in a rural county.
No hard use (plowing, mudding etc.
) Original tranny lasted 211,969 miles and bus now has 240,822.
Transmission will only work behind Duramax unless you do internal parts replacement.
GM cross-reference says 2013 to 2019, 2500, 3500, and 4500 will fit.
I have to beleave the fitment is broder.
I will not grantee fitment.
Do research before you buy.
The transmission came out of a 2014-4500 cutaway with a 6.
6 Duramax.
I Talked to shop who did the work to get the work order.
They said the cost now is $4,000+ to rebuild a 6L90.
I am willing to get it shipped but you would pay shipping.
Truck freight would need to be used.
I am parting out complete 2014 bus.
Duramax motor is gone.