these are all alloy 16v ,do not bolt to type nine,i have two here good for a lightweight 7 ,one bottom end knock the other stud for tensioner snapped ,£60 the pair 01254382963 phil

What (if any) RWD 'box do they bolt to? (Anyone know?)

99% sure there isn't one - bellhousings to attach them to type 9s are available from Shawspeed, I think Quantum Cars do them as well and maybe Westfield too..... not especially cheap though it has to be said.

For completeness Caterham also use the engine and sell a bellhousing.