I've already installed the tune-o-matic, rerouted the neck pocket for a slightly wider neck heel and screwed the neck on.

I have some P90s


The neck has a paddle-head, so will need to shape it, my favorite shape is the big CBS-Fender style, but this isn't big enough.
So, I designed this, inspired by Gibson Firebird and Epiphone Wilshire.

I'm gonna cut a new pickguard to try and cover up where the old bridge was.
I'm thinking about a no-name jazzmaster trem too?
EDIT- looking at that headstock design, I think it looks a bit thin- the end needs fattening up a bit.