96 to 01 '0411 conversion; S10 4.3 newb ?

[overS10ded]

I have a '0411 from a 2001 S10 4.3 Blazer and am replacing my '96 "black box" on my '96 4.3 from a S10 Blazer. The engine is in a '91 S10 Blazer 4X4(manual transfercase, not electric/computer) with a 700R4 trans. I have used "LEXTECH"'s (thanks again, Jeff) pinout conversions to prepare for the swap and am not using any trans input to the computer being that it is a 700R4 trans. My questions are do I need to use a different OS or is the 4.3 OS in the '0411 going to work with my 4.3 for now? And on the VIN, can I use my '91 VIN, or do I need to use the '96 engine VIN??? Not sure on these issues. Thanks in advance.

I have just acquired the V1 a little while back and am anxious to get tuning, to install a marine manifold I've peiced together, then a Procharger P1S/C I have laying around.
Thanks,
Bruce