We ran Flowmaster 3 chamber mufflers which I think are like the 50 series, 3 in. with an x-pipe in my Son's big block El Camino and you could hear the car coming from blocks away (and it sounded good).
Turn signals fixed. I did not know that there was 2 flasher controllers until I talked to a friend that is a mechanic. I had replaced the flasher in the fuse block, but the signal flasher was tucked up under the dash.
CPP Stage IV Pro Touring kit ordered today as well as the steering box. I got lucky and beat the price increase that is coming to this kit next week, so I saved myself about $500. We are headed into our busy fall racing season, so I doubt I will have this installed before the snow flies.