Been a while since I've updated this thread! Here's some pictures of the custom 4" exhaust system:
I ran it with the 4" straight pipe for a few days and it was way too loud, so I've fitted an exhaust back box with a 3" inlet using a 4"-3" reducer:
I'm really happy with how it fits and sounds - ground clearance is compromised by the clamp near the downpipe but I'll swap this out for a normal t-bolt clamp asap. This is what it sounded like with the 4" straight pipe:
https://vimeo.com/201007362
Anyway it sounds much nicer now and has a proper exhaust note rather than an obnoxious rumble I'll get some footage up of the new back box ASAP for those wondering what a 4" system to a 3" box sounds like.
Also bought a new turbo oil drain and some heat protection products from DEI:
I still have loads of little cosmetic things to sort out (such as rear reg plate, rear spats, a few minor scratches/dents, interior needs tidying as does the engine bay including the black bonnet insulation) not to mention lots of little mechanical things. But I'll get round to doing it all over winter, just in time for spring hopefully