Vacuum Advance Unit - One of these?

[gizzardio]

Hi

looking at replacing my vac advance unit and found these at v reasonable price.

but which one would be correct for the RV8?

http://www.simonbbc.com/ignition-spares/45d-mgb-lu...

http://www.simonbbc.com/ignition-spares/lucas-35d-...

I'm guessing the latter one "35D" but just checking.

Thanks

Rob

[Barkychoc]

Rob I think there are loads of variations (look on rimmers website) which is why I bought the one thats on from Tvr Power. Chris