:usa:Just completed one in a friends truck..88 efi in an 85 carbed truck...used the 88 cluster and the entire 88 dash/ engine harness, swapped tanks(fuel pump)... The ca. smog rep stated that it was a perfect swap/ passed the visual and ca smog w/ flying colors! dont short cut by chompin up the harness to save time and be sure that the o2 sensors are all in the "original" 88, in our case,location..the referee stated that this is where a lot of ( otherwise good swaps go bad) ..take your time, do it right, do it once...the swap was easy, the wiring can be a bleep..Have a FSM handy, haynes and Chlymer, and Chilton manuals are somewhat vague in this area Good luck!