94 s10s with 4.3 came with an nv3500, why not use the speedo stepper the same as your 4 gauge? thats what I did
IMG_1070 by
Joe Doh, on Flickr
(I see it was my temp and oil press that were backwards, I think I said fuel before, my error)
you have to be using the pcm/ip to drive your steppers for your 4 gauge too, so the parts are there