I am actually looking at one of these right now.
Can you rip all the crappy wiring and replace?? I can't imagine they're massively complicated wiring wise...?
Because they are epic, most of the niggles have been identified and have preventative measures in place now thanks to specialists such as TVR Power.
Anyone that buys one of these now is either mightily naive and/or has mahoosive cojones.
Sadly I don't have the latter so will never know how much fun these can be, when they work
I watched Edd China replace the chassis on a Cerbera that Mike Brewer picked up cheap. Some job, but he made it look easy.
Best of luck with it.