Tony, you can go to Wayne's web site
Camaro - Untold Secrets and send him an email. I have his phone # at home but I would still have to check with him about giving it out first. Most of the JL8 cars seem to be in the Feb-June range. My car is 04A with a Feb dated rear. I think Jim at Heartbeat City has a LOS built JL8 that is an 11A car that supposedly has documentation but I've never seen another JL8 even close to that early so I'm hesitant on that one.