318 LA rebuild after losing a valve seat

I did think about that. I have some header wrap coming that I was going to place in strategic areas, and I'm going to reroute the speedo cable. Could I wrap the trans cooler lines with the same header wrap?
Sure. Or look up heat wrap on Summit or Amazon. There are a lot of options that might better fit the smaller tubes. If you are wrapping the headers, I'd still wrap the tubes. That pipe is really close to the oil pan which doesn't help either.