Here is a Pig Y on the left & a GS Y on the right. I have no idea whether it is early or late type.
The parts book for the Hornet gives the same Y piece as for the Pig. But the book is wrong the entire Hornet exhaust system is quite different. The book was based on the prototypes using the Pig system.
But that meant you had a heat source directly under one of the spare missiles in the rear. It also meant loaders were tempted to stand on the end of the tailpipe, although this was later protected by a small armoured cowl.
The production Hornet had quite a different silencer mounted below the radiator accommodated by an enlarged belly plate with the tail pipe exiting in front of the front wheel on the driver's side, sometimes causing hypoxia for the driver.
Hornet Y on the left, Pig Y on the right.
You can see the gaskets I have fashioned from the Standard Vanguard gaskets.
