OK I am rebuilding my trans as we speak due to one of my sprang gear shattering.first q is should I change the TC there was some small metal chunks in pan.second is if I do need to should I go with stock stall or change to something else.it is a daily driver but don't know if it will help the trans or hurt it and lastly can I go over board with trans cooler I have two I thought to stack or should I get a big one any thought would be apreciated