Manual valve body 4l60e? (for OBD1 high stall fix)

I am trying to figure out all of my ways around the OBD1 high stall problem.

Options:
1. Possible programming fix but, won't work on all cars

2. OBDII conversion but, expensive and will require expensive scaning software (Auto Tap)

3. 4l60/700R4 swap but, it seems like it is a hassle to make the VSS, TC lockup and computer work. Would the torque arm bolt up?

4. Manual valvebody 4l60e? I think I heard that you could do this to fix the problem but I can't find any info.

The car is a 95 z28 and is getting a motor built right now. It is a daily driver. It should make ~500-550 hp on N2O. The transmission needs to be rebuilt to hold this HP anyway. The computer has no programming yet but will get it via mail order. I don't have the money to do this wrong and then have to fix it. I wouldn't mind shifting manually if that is an option. What is my best route? It seems like a manual valve body would be the cheapest?

Thanks in advance
Dustin

Doing a search on High Stall speed and saw this question with no answer... anyone have anymore info yet?

I am getting a Heads/Cam package and dynotuning at the same time... I want to upgrade to a 3500 stall to get the best performance.... is there something I can tell my programmer to do to fix the problem? Are there any tables, etc. that can be adjusted?

I know Ed Wright and PCMFORLESS can do it, but the car is getting tuned on the Dyno with a wideband but I'm not sure if the tuner has any experience with this problem.

I got my High stall problem fixed by Bryan at PCMFORLESS, Why not try that before going to the extemes of the other options. BTW, the reason it might not work on all cars ifs because there are external factors that make a slipping or blown tranny act like a high stall issue, and the computer fix doesn't help that. The computer fix will help if it is just the high stall issue.

PCMFORLESS fixed my high stall problem and I havent looked back, for $50 you might as well try it because in most cases it does the trick.

Can anyone tell me what the fix is? I can get my programmer to do it when I'm getting it dynotuned.

I have no idea what it is and he probably wont tell anyone either since I think that he is preety much the only that can do it.