Lt1 bottom end, how much can they take?

[bottledbird68]

Ok, so I'm pricing different options out in my head forming this winters plan of attack on the z if I do wind up tearing it down.
My plan is to finally convert the 2 stage nos cheater kit I have for efi use and run the car on spray.
Now, I'm torn on keeping the lt1 or going ls power, but, since this is the lt1 section let's talk lt1 bottom ends.
I already looked at and priced up a fully forged 383 rotating assembly that I know would be basically bulletproof for whatever I want to throw at it. And yeah, it'd be great to run a 300 shot and go balls out but on this car I don't think I care enough to add all the shit I'd need to track an 800+ horse car.

So, thinking realistically, if for once I can actually do something with moderation (very difficult for me trust me lol) what can the stock lt1 bottom end handle? Say I stay super budget and just do rings/bearing, some good arp fasteners, and call it a day? I'd probably upgrade from my hot cam to something a little bigger but nothing too crazy since I don't think I want to buy heads, and my heads/hot cam combo already put 319 to the wheels on a poopy tune so I'm guessing what's on there flows ok. Basically, how much of a shot can the stock bottom end take and be semi reliable?

Option 2, spend some extra and get at least forged pistons along with everything in option 1. I'm assuming the stock pistons are the biggest weak point. Taking them out of the equation how much more can I add safely? Only thing really stopping me here is the cost/headache of getting it all rebalanced. At that point I may want...

Option 3, a full cast 383 rotating assbly from eagle. About half the money of the forged stuff but is it even as good as stock?

Basically, I'm assuming I'm close to 400 horse at the flywheel now. I'd like to get closer to 450 by freshening it up, going bigger on the cam, and doing some tuning. Then hit it with 75-100 horse on the first stage and then have the second stage put me between 150-200 horse total. Just trying to get some opinions on what I need to be fairly reliable strengthwise.
Already got fuel system, colder plugs, timing retard and all the other associated odds and ends sorted out. Just need to settle in on which hard parts will get me there.
I'm looking for a solid mid to high 12 second car on the motor and mid 11's on spray. I think that'll have me more than satisfied with this project.
So, lt1 guru's, discuss away.