We have not discussed the engine... the OE turbo V-6 will be used or ??
The converter is very heavy on a 4l80E unless you have a custom unit built. We've built several small 10 inch converters for the 4L80E. Billet converter front cover and stuff inside, very expensive
A friend of mine was an engineer on the 4L80E in the early days. They tried the tranny against the ZR-1 motor for the vettes. The heavy converter hurt the RPM acceleration of the engine too much I was told.
THe bands of the 4L80E... rear band is a copy of the T-400 , no adjustment to it.
The front band... if you are using the late wide band the matching longer servo pin must be used. No adjustment usually needed there
Dont worry how old you are... it is the mileage on your body that adds up.