1964? or newer Chevy 6

[Jeff Gordon]

Hi,
I went over to Andy Cussworth's house today and had a look at his Blitz.
It has in it a Chevy 6 that looks like an oversize Holden Red motor.
Totally different to a 216 which looks like an over size Holden Gray motor.
It has two small side plates and tappet cover like the red motor.
It is roughly 2 inches longer than a Red.
What size are they?
What did they come out in here in Australia?
Has anyone got a exhaust manifold for one?

Cheers
Jeff