I have one of the new style MSD shift lights (they are now a little wider on the sides, the original design was more round). I mounted it in my '92 Z28 track car and the car only ran to get on and off a trailer a couple times. It's virtually unused, but I did tweek the mounting plate to fit the roll cage tube (it may need straightened or touched up with some black paint). I also have a package of MSD rev limiter/shift light chips (odd numbers, 6100-6900 rpm).
Pics on request.
$80 plus freight OBO
trackbird (at) gmail dot com