Ok so i have been looking at the tranny cooler idea cause I have high miles and live in the mountains... I ordered a 70268 b&m from amazon but got the wrong one. Now I see posts for the 70264? Which tranny cooler should I use on a 99 limited with 230,000? Amazon sent me a 70255 so I need to send it back but want to know which to re order. Thanks everyone for your help!