Just poking around the other day looking at the differences between two different HD's with the lq4 and I noticed something. The 6 or 7 digits on the side of the TPS are different but are they different in actuality? Same goes for the TAC modules, they have totally different pn/model # as well. I figured two HD's of the same year, 2005, would have the same electronics.
Just curious about it.