You’ll need to go a bit faster … 🙂
Looks great, Have you got the rest of it?

Presumably there must have been some sort of exhaust valve fitted, maybe a reed valve of some sort?

It has been ‘ended’. I also sent the seller a message asking for provenance, got no reply.

I think that they felt using intruders to hunt the German nightfighters was an effective policy.

RIP.

Spartan Cruiser G-ACYK
http://en.m.wikipedia.org/wiki/Spartan_Cruiser

Something similar was mentioned in a book; I cannot remember if it was ‘Fly for Your Life’ or The Big Show’, I think the latter;the Spitfire was said to have been hit over France, but made it back to the UK before crashing in treetops. That said, both books seem to be regarded as akin to works of fiction these days.