Vortec,
thanks for the comments. If I regear, I would go factory, to make sure I did not have any warranty issues. not sure I will need to.
My biggest concern is the 4L60E. I have read you can put the shift kit in and adjust the firmness based on the size of the holes you drill and number of spacers.
Just looking for advice on beefing up the tranny.

Maybe I'll let it go and replace it with a 65 when needed