Anybody used this shift kit in the AW4?

Ok, so I've been scouring the internet for rebuild kits and shift kits for the AW4 and I had been very unlucky for a while until I hit a gold mine. Transtar industries sells a rubuild kit for when mine bites the dust. The AW4 is made by Aisin Warner (obviously) which also makes the transmissions for Toyota who installs it in their trucks and 4 runners but calls it the A340. The only difference is that the AW4 has a removable bellhousing and transfer case whereas the A340 does not. So I came upon this site who sells modified valve bodies with their custom "shift kit" installed. They claim they are the only company who does this for the A340 (AW4). Does anybody run these or has anybody figured out a way to do it yourself? Its an absolute joke for over $600! Especially since they just modify your existing valve body and send it back! I really like the feel of shift kits and I figure it will help the trans last longer anyway. What you guys think?

http://www.importperformancetrans.com/inventory.cgi?action=description&item_id=TkMMRUmlsCdmY7nNNCSbbEJxxBcZdy

IPT is badass.

Hit those guys up for more info. They can definetly hook you up. If I we're to get my valve body upgraded, it would definetly be from these guys. They have built many A340s for 800whp+ supras.

BTW, here's more info posted by the owner of that shop...

http://www.tundrasolutions.com/forums/tundra/123386-transmission-upgrades-from-level-10-a-2/

wow, thats expensive. what exactly does the shift kit do for the trans?

tigerShark said:

wow, thats expensive. what exactly does the shift kit do for the trans?

Click to expand...

read the link I posted.

I honestly wouldn't really even think about upgrading unless you:

a. have a stroker
b. have a SC or turbo setup
c. tow regularly

The factory trans is just fine for most people.