Im putting a vortec 454 in my 78 Camaro with a th400 transmission and 3.42s out back. I've done an egr, purge valve and ac delete. I'm waiting on headers and the piping to do my cold air intake to be delivered to finish my install. The engine is out of a 99 c3500 stock ecm as well as all stock internals. What's a good tune to start with.