I was told by one the rebuilders in my cousins shop, don't waste you money until you need a rebuild. conservity "bang for the buck" bunch. But he also told me they normally use these kits as part of their rebuild, it makes it last longer.
The shifts makes for more positive shifts (less slippage) as engineered from factory. Most america buyers (non-technical types/non car-buffs) like those smooth shifts. Those folks actually thnik (due to marktering crap) that the soft shift is a better ATX. But we all know it's to sell more cars.
Paul
Rebuilder also told if I just had to have it done, he could do it in-vechicle? 6-7 hours labor give take, if I don't watch! Hi Hi!!!