5sfe block with 3sge head? Options

[Tsizzles98]

I own a 98 celica gt, pretty basic nothing special
and im lookin for a little more power with little expense
so i have read that the 5sfe stock head was built specifically for economy performance
and i was wondering if its possible to throw a 3sge head on it with a ton on modifacations or work.
my car has 270,000 miles on it and i need this information for when i put a new 5sfe in it.
but i also was wondering if its possible for a 3sge to hook staright up to a 5sfe tranny?
i know you need a new ecu and what not but transmission hook up im not sure
im guessing the motor mounts are the same too.

Thanks