I guess most people didn't know, but I have decided to change my chassis for a straight one rather than repair and make new wishbones myself, just don't have the time! It was the one made after mine with the 'production' geometry but slightly beefier top rail. It uses production front suspension and uprights instead of the current steel uprights with spherical bearings (not ideal for road use and future replacements).
All I need to do is notch the top rail for increased steering lock and modify the steering rack mounts for a sierra rack (which I will convert to quick ratio).
Fun getting it home, it was wider than the trailer!
Rich