97 can be adjusted just like the 98+ can. So tuning you aren't going to have any issues there.
The only difference in the trans compared to a 98-02 car is the cooler lines have different fittings, in 03 the trans had a different valve body and maybe some other things I cant really remember, and I thought at one point I had read on triple edge performance that in mid 99 they changed the valve body in the trans but I cant seem to find it anywhere.