OK, bit of an update. I finally got my finger out and fitted the new exhaust manifold and coilovers (sorry again for the crap pics):




I also had a new exhaust centre section fitted (custom stainless jobbie) to replace my crappy bodged centre resonator box. There are now two 'boxes' in the exhaust rather than three, it sounds nice and deep without being too loud, in fact under throttle you can barely hear the exhaust over the intake noise of the carbs.
Here's a video, first couple of minutes is just bimbling about to give you an idea of how it sounds during general driving, skip to around 2:10 to hear what it sounds like when giving it some beans

:
http://www.youtube.com/watch?v=ulaY5Wi4PokIt pulls lovely and cleanly through the gears, and the throttle response is awesome
