4eat be made to handle more?

[david_12121]

So some of you might remember my inquisitions about turbocharging. I'm finally getting to it after the suspension modifications on the SVX and all the work I've done to my RX7 (V8 swapped + superchaged)
So the turbo will happen and I'm shooting for 350-400 crank, for now (not sure how good I can get at megasquirting!). So let's go with 320whp, ~320wtq!
Unfortunately projects are expensive and I wouldn't have enough for a dccd, and I don't wanna deal with a 5mt breaking on me cuz of the torque.

So I was thinking of keeping the stock auto for a few months until I get a 6mt.
Do you guys think it can handle the power under the following conditions:
-I already have a pretty large cooler on it
-If I do not ever let it shift on its own while under power, as in I manumatic it, and let it rev down before shifting...
-never break boost and have an eye on the atf temp
-If I have to, weld the center "diff" and make it rwd!

I know this seems idiotic to many of you, and I understand why it would but I'd appreciate any info you can give me on that.