Robbie
Yes, belts work OK.

Sourced from The Plastic Man (who else!)Same place as my spare wheel filler comes from.
http://www.theplasticman.co.uk/index.php?area=calculator

For the draft stop - Polycarbonate (unbreakable).

You spec the whole thing, including radius of corners, I also have polished edges, and spec the holes, because they drill super clean holes.
I need to dig out the measurements from the garage so I'll post them later.........

You now have a PM packed with dimensions! rtm

DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4