I'm starting to worry after what you've just said, but it's good to know - I want to know.
I bought the front cut and roof off a guy in Gold Coast. He drives a bayside blue 260 flared with an RB26.
He purchased a whole car and chopped it up cause he needed the rear for his. I think he was kicking himself for chopping it up, as it was in very good shape.
So I scored the roof and front, my roof has a sunroof in it.
I'm letting my panel beater decide what the best course of action is, but I think we'll use as much of the 260 as possible. (I think it's the only way to save the car)
We'll probably attach through the 'A' pillars and half way along the sills. I want to cut out the entire 240 firewall and transfer it over to keep the vin and all the holes correct.
My 240 radiator support is in poor shape. I've seen on ebay someone that makes them and a mob in England makes them too. I guess if I changed it, the front would retain its originality and please the purists - arghh it's only money!
I'm still learning about the zeds but I was under the impression the 240/260 had the same dimensions, the 260 being a mere facelift at the time, but please correct me if I'm wrong.
I'll check the dash mounting points, better to know now then when I'm starting to re-assemble.
Thanks again.