How is my logic uncorrect? It applies in any case:

ADD MORE POWER TO A PART THAT CAN'T HANDLE IT AND IT BREAKS.

I know the engineers at chrysler designed the tranny to slip and whatever for comfort, ive read all about that. But you know who i've read it from? The people who won't fix your car when it breaks, the sellers of the part.

A shift kit only "reprograms" the shifts controlled by the valve body, it wont magically make any other parts stronger.

Think of the transmission as 4 parts.

Main Tranny (internals other than final drive and diff)

Final Drive Gears

Differential

Axles

Takes those four things (plus the wheel of course) to transmit energy to move the car.

The ONLY place that a shift kit helps is at the "main tranny". It wont help other than performance at the other places. Do you actually think Chrysler put "performance capable" parts in their transmissions that would be use on minivans? I think not... Sure you could add a shift kit all day long and run it into the ground all day long and be happy. But those parts that Chrysler intended for slipping and comfort are going to buckle.

Bottom line, the shift kit is NOT the answer to everyones tranny problems. It helps, of course. But when you say "a shift kit is the best thing you can do for a transmissin" every amateur 420a owner with an AT tranny will attempt it and end up blowing their tranny. You've read and maybe seen first hand how hard it is to do.

Just don't want people blowing 2+ trannys like I did, it's a pain in the ass and $$$ labor.