I can 1000% assure i amI was wondering the same thing, which is why I mentioned this.
Like 618 and Schurkey said, the 0411 is a better PCM but by the sound of things you really don't need it.
can the black box do a transmission swap because I think the op is planing to swap in a nv3500 at some point?
Yea I have also confirmed thru a few including Lextech the 98-99 black box can pretty much do anything.. at the sacrifice of having a slower processor …..Except
“ the hard coded rpm limit can’t be changed with the black box.”
I over looked that reply back when @df2x4 mention it.
I may have a couple if not definitely one 12200411 pcm’s up for sale soon here.
My 99 black box is likely gonna suit for what I need done / this is not going to be some big built L31 / just the Manual trans swap and a few Emissions . If I was ever to Ls swap I would do this pin out which is why I may keep one of the pcms.