Leather is supposedly "biscuit" or beige really, or light tan...or "sand"
Tie wraps were slid under the DNA seat rails and then around various bits of the metal that are inside the plastic shell....I was going to drill and tap the seat frame, but it is not substantial enough....drilled one hole and then decided against it....it would weaken the internal frame in the seat too much.
You need long ties, but with about four, two straight across and two and angles to prevent fore and aft movement, it is remarkably solid.
You just have to make sure you attach the ties to the same metal that the DNA rails bolt to, because they go up down, back and forward with the seat, so as far as the attachment goes they are static.
On another subject, for anyone with an older M52 engine, you have to buy a T piece for the oil pressure and oil temp senders, as unlike yours Jez, there is only the one off-take....trouble is the temp sender bottoms out in the threads. I don't know if this is a problem or not for it's operation, but it is for sealing it. I have ordered a different T piece to see if it has deeper threads....if not I may have to fit a spacer or something.
Not found the water block drain yet....have to wait till I jack it up.