hey
welcome to the board
3K is not too bad for a low mileage 87 supra... looks like it's been well looked after and had all the need to be done things already done... bonus
i posted in another thread ... "head gaskets" i think the thread was... with a few things to check
weight of the car will be bout 3000lbs roundabout mine is an 87 7mgte and with about 15litres of gas in weighs 1620kg with me in it
shift points... well that depends... not sure exactly under normal acceleration what the shift points are, just like any normal car i would assume... but with mine under full throttle and boosting alot i eventually taught the ecu to change at 6000rpm under full throttle which funnily enuf just happens to be where my power starts running out so that auto ecu is quite intelligent
generally they do need a little gas to get them to reverse... what makes you worry about the reverse? what did it do
other than head gasket there's no other majors that i know of really, there's rod knock but make sure your oil is always at a good level and don't thrash it when it's cold or ur just looking for the worst to happen
that's pretty cool to already come with those upgrades, saves you spending it hehe
stock boost should be anywhere between 5.8psi and 6.2psi i believe on stock automatic 7mgte
rebuilt trannies, not sure what they cost over there, not really had my trannie go on me so have never the need to rebuild it lol
oh and one more thing... i would certainly hope your 7mgte has a 3.0 turbo head too :P hehe
good luck