So I will be ordering this part for $229 + $17.50 shipping.
Also:
Trans Cooler - Flex-a-lite $39.95 (7.5x20.5x.75")
Trans Filter w/gasket - $18.99
ATF - 4 x $3.00
So I should be able to fix this ATX for about $320

I'm not adding this for terms of argument. I also respect the choice you decide to make since you seem very knowledgable and understand our points and know what you're getting into, but just to add:Ryan wrote:I do respect you for going this route, as not many people bother to even fix it (ie, buy a new car).
It would still be my personal choice to switch to a 5 speed:
-I can choose how my car runs
-I can choose when to put down power
-It won't give me grief unless I break it (no random failures).
-I find autos painfully boring to drive
-Less driveline losses -> potential for better MPG
But you seem to have your mind made up, so please let us know how this goes, so the next guy can have another option at his disposal.