Blew it up... GRRRRR!!!!!

John,
My experience with an old 73 Power Wagon I owned in the 80's showed me to NEVER mix old rockers/pushrods on a Mopar. That truck with the factory 318 did the same as your car; push the pushrods through the rocker arms. My problem was I took the top end apart to replace a head gasket, and didn't keep the parts marked for reassembly.
Once you replace the pushrods/rocker arms, you'll be good to go. Just make sure that thing is running on all 8 before the 17th! I wanna see it! :D

George