So, my project strat is going to have an HSH pickup layout but there's a lump of body in the way of the neck pickup leg and not enough depth for the screw.
Time to break the router out. I left some of the lump behind so the original pickguard can go back on if I fancy it. The neck humbucker now just fits.
I'm going to learn from the RR2V project and do all the functional bits of this one before making any effort at refinishing. It's a lesson you'd have thought I'd have learned years ago from working on bikes but I get caught out by it every time.