need input on parts for a 904 rebuild!!!

OK i have a 74 dart sport with a 91 360 in it. its pretty much a stock 360 it is a factory roller cam motor with some bolt ons. tti headers, holly street dominater intake n a edelbrock carb. so not much in hp department. I just did a disc brake explorer rear swap in it. turned out very nice however i did have to swap gears i started with 3.73s n was way to much for interstate cruising. i came across some 3.30s n they worked awsome. the car has a a904 trans. recently it began shifting spuratic i ended up putting a trans go tf2 shift kit in it n am pretty happy with it. it did appear to take care a the problem. i have rebuilt several c4 ford transmissions n they turned out really well so i am going to do my 904 it was alot of clutch material in the pan n front band has little to no adj. left nor any frition material n rear band isnt much better so while it hasnt self distructed i want to freshin it up. i ordered a performance automatic kit through summit here is my question what if anything should i upgrade look out for etc while i am in this trans any helpfull tips etc i know to soak bands n clutches in fluid to prevent chatter n that vasaliene is awsome for holding thrust washers etc during assembly just wondering the do n donts n if its any must do upgrades for durability

Might be an idea to get a ATSG manual for it just so you've got all the clearances right. I don't know whats in the Summit performance kit for friction plates, but with what you've done to the engine, a good rebuild will work OK. Chrysler used Raybestos plates for the most part, and some builders prefer to use the waffle lined plates for applications other than stock. Borg Warner plates will usually give what some builders call a "softer shift". With builders it's a personal thing. Make sure you clean the transmission cooling system out, as any clutch/steel material that come out of your original transmission will be there. Best bet is to pull the rad and take it to a rad shop and have a new cooler installed. If this is not possible for whatever reason, by pass the cooler in the rad with a GOOD transmission cooler. LONG MANUFACTURING makes the best, sometimes sold under the B&M name. B & M buy them from Long. Get a good sized one. Your converter will also have all the gunk in it too, so replace it with whatever converter best suits your needs. Don't bother to try and have the converter FLUSHED. This technology went out with the flathead 6. It never cleaned the converter properly and from my experience, only the CHEAP CHEAP transmission shops had the flushing machine in their shop. Remember, cold solvent does'nt clean as good as ATF at operating temperature.
Just my opinion.