65 Barracuda 187 code!!!

I got the motor out yesterday. The bearings are definitely shot in the rod and mains. No oil pressure as well, so the cam bearings are worn. I got all my new stuff, including a Lokar kickdown cable instead of a coat hanger haha :D Still waiting for my new Comp cams camhaft, my shifter cable, and other little things. Here's some photos to keep you guys happy lol.

Does anyone know what type of hard stuff is on the side of my motor? I pulled the oil pan off, and this was lying next to the bolts on the side. It's crushable too. Is it carbon buildup?

I decided to also remove all the wiring and do a wire tuck. I'm removing the bulkhead completely and going through the kick panel, and up inside the inner fender. This is my first time so bear with me and any advice would be great...