Two places for tranny tech
Click Click Racing
and
TCCoA.com - Thunderbird & Cougar Club of America on the home page click on tech articles and look in the forums too. I am no tranny tech but raising the pressure of the epc will cause trans failure. Ford sells a higher pressure solenoid but it is not neccessary if you do the j-mod (ford engineer designed shift kit). On clickclickracing the moderator is Dan (silverfox) he is a great guy and will help you out. It is easy to build the trans to withstand over 650hp. The only parts i have left right now for one is the complete solenoid and hard harness for a 98 and up 4r70w. I will sell them for half of what ford charges, they are brand new.
Mark