Neil
 
I believe ALL Essex V6's in Australia were born with extractors/headers.  Someone might update me on whether
this was the default for all Mk1 Capri V6 from UK or not ?
The Weber in my D-port 165HP "special eleven" that i cant speak of highly enough, is oem 38DGAS
(prev were 40 DFAV I believe)
 
Any confirmations or comments most welcome !

i used a Holley 500, but you do need to jet it down quite a bit, 0.064 or 0.062 if memory serves, the other must is ti get rid of that clump of iron they call a fan, fit a thermatic instead, it robs a heap of power, it will only engage on a hot day in traffic anyway