Thanks everyone
The peal and seal stuff can be found in the roofing section. It comes in a roll 6 inches wide and 50 feet long for like $14. Works great

UV bondo is a SWEET product.
To be honest, this car is the first time I have done my own install. I've done a CD player here, replaced stock speakers with same size ones before, but never anything this extensive. Just did a TON of research and asked a lot of questions before I began. If anyone lives near Tennessee, feel free to drop me a line if you need work done
Anyway, I am off to get more fiberglass... the sub enclosure in the trunk will be molded to the right side of the trunk.