Guys,

When getting ready to purchase a replacement, several sites have before chassis 491584 and a different part for chassis 491585 and after, starting in '89. Here's my conundrum: my car is '87 but the donor engine/transmission (and donor EZL and ECU) that is going in is from a '90, well after the updated part. Currently I'm using the '87 instrument cluster. Is the updated part particular to the cluster, or the electrical modules? When I put the donor '90 cluster in (which has wonderful bright orange needles and orange-yellow script) in the future after final interior refurb, will I need the updated part then?

Thanks,
Drew