then dont push it. this is a corolla, and a 4wd one at that...adding a small or medium size turbo would be nice, i just read in a thread 5 min ago that someone had a 90 or 91 4A-FE with a turbo pushing 165 or 170 hp to the wheels, and the car has 150,xxx miles on it. he said it still runs smooth even since it's been boosted since (i think) January. ill edit with the thread I read this in.
that said, i think you should go for it, eventually. im thinking of doing this myself as well. only when the budget allows hgowever

its maaaad money to get a turbo for a car that doesnt usually get turbos or arent exactly "tuner friendly". everything has to be fabricated custom it seems, and that costs $$$