first of all im a sammi guy posting over here because im working on a '92 chevy.
what would happen if you over filled the automatic transmission because the girl who owns the truck know nothing and is sure here tranny is dead but the dipstick shows way past full and it looks like atf is coming out the front seal? she already ordered a new tranny so its not really a biggie.
and next is thier anyone beside's oru that offers a solid axle kit because she wants to ru 39.5's and a bigger lift(currently 4 inch suspension and 3 inch body what is coming off) but i know the ifs isnt going to hold up. so i am planning on swapping in a ford hp44 i know this has benn done a million times before but im just asking you guys since it seems like you know what your doing. thank you for the help
and this is not a budget build but a kind quick one so a kit is the way to go for me instead of designing and building one

Over filling a transmission is worse then running a little low.. I would rather be low a a couple quarts then be over a couple quarts.. If you over fill it the mass that the fluid takes up when under pressure has to go somewhere and there is no place for it to go but out.. More then likely that is why the seals blew..

What size lift are you looking for ?

Me personally I would rather see a trans a little over full than under full. If it is way over full it can actually start locking up the valve body, and clutch packs, but that is only when one is full to the top...don't see that very often. Trans can take a quart or two over full, if it becomes an issue, then the trans will spit the excess out the breather. 4l80e's are the only one's I know that like to be just a hair under full, otherwise when you tow they will spit the excess fluid until they are at a happy medium.

If she has a half ton with a 700, too much oil didn't cause the seal to blow, just mileage and wear on the pump bushing. It allows to much pressurized oil past the bushing and against the seal. There is a drainback hole, but they are way too small, and once the supply overloads the drain, then voila, a leak at the pump. Cure for this is to use a teflon coated pump bushing, and drill the drainback holes out to 5/16", and then install the seal retainer also. I hope she spent the cash and got a trans from a reputable builder that upgrades them. Remember, you get what you pay for, and GM SRTA's are OK, but they still lack the upgrades.