I have never liked the digital dash, so i decided to change it to analog. I purchased an analog one, my problem is i don't know how to identify which model supra it came from. The guy who sold it to me said he thought it was a MA70. I herd somewhere i while ago that the loom is different between the Ma70,Ga70 and JZA70. Is there a way to identify the dash? ,has anyone done this conversion and is it possible to use my existing loom and speedo cable? I never got one with the dash. Any help much appreciated