Steve – Sorry I can’t help with the A352 measurements.
But I do have a couple of photos of my exhaust system within a Spitfire 1500 chassis.
This last photo above shows the biggest problem I had with the silencer boxes.
As the rear chassis cross member prevented the silencer boxes going ‘back’ any further.
So despite the fact the exhaust is fitted in the factory positions, the tail pipes stick out at the back.
( Due to the body shell being shorter than the Spitfire original. )
Looking back at the original A352 build thread I found this photo of the Spitfire boot floor within the bodyshell.
By comparison, this is what was left of my boot floor and the bolts for the exhaust are in the factory positions.
Not sure if any of the above is of any help, but good luck, Paul.
