[Mgs] Tourist Trophy exhaust?

[Todd Mullins]

Hi guys - time to order the exhaust system for my '74 restoration.   
I'm having the factory manifold Jet-Hot coated, so whatever exhaust I  
purchase will have to mate with the manifold (no header systems).

The two top candidates at this point are the Falcon Big Bore system  
and the Moss Tourist Trophy system.  The BB has lots of advocates, and  
is clearly geared towards performance as well as durability.  My main  
goal is good performance for my motor (9.0:1 CR pistons, Piper 270  
cam, P&P head, stock HIFs with K&N).  Appearance and sound are  
secondary concerns.

So what's the scoop on the Tourist Trophy?  Kelvin?  I saw a nice  
YouTube video with Kelvin describing the TT features.  But what I  
haven't seen is hard data on its performance characteristics.  I  
really like the upgraded mounting system of the TT, and sure, it's  
pretty, but how does it perform relative to the BB (and relative to  
the Peco, apparently the "gold standard" of fast road MGB exhaust  
systems)?

Thanks for any input!

-todd
'74 MGB Tourer undergoing resurrection