I'm no stranger to cars with bad reputations and the most reliable car I've ever owned was my 4200, so I could have trusted that. I bet you'd have got a year or twos worth of fun then broken it for spares. With hindsight someone has got a bargain!
Wonder if it'll reappear on eBay for £7k, normal plate and no mention of history? If insurance job is unrecorded, it'll probably happen.