You may run into a problem such as I did when buying a reproduction trunk lid and installing a spoiler on it, The trunk springs that I purchased from the Hunington Beach, CA supplier were also reproduction and they were not strong enough to hold the trunk lid open, so I found a 68 Camaro Donor Car and got the GM trunk springs out of it, there are two springs, and there are also three different slots you can mount them into for adjustment, placed mine in the second position and the trunk stays up fine, Little tricky installing the spoiler on a trunk lid that is not predrilled, you can spend a little extra and get one that is predrilled...........................Also when installing a new trunk light, the feeding of the power wire is tricky also, getting it to go where you want it too.....Good Luck, Max in Las Vegas, NV