727 vs. 904???

I gotta admit in the old days (70's and 80's) we would never think of using a 904 in a performance application cause it seemed they didn't even hold up well to a stock 318. But we were kids then and ran the snot out of everything, never changed the fluids regularly, and never let things warm up good, and who ever needed a trans. cooler anyway... LOL Today's transmission fluids have improved and so have friction materials. Even what is considered stock friction material today is better than it was 30 yrs. ago. Another thing is several shift kits sold back then weren't really very good. To us kids we thought if the trans. snapped your neck when it shifted it was great. Now we know that sometimes that neck snapping ability some shift kits produce actually aren't good because it is possibly overlapping gears while shifting.