It's fairly simple. Not cheap, but simple. 3 good aftermarket sources in France (one company is owned and run by one of Senna's F1 mechanic), plenty of parts carry over from VW, Saab, Volvo and a few other brands. If you buy K-jet crap, you can get lucky. If you're looking for suspension parts, body panels, R5 specific items, you can get bent over.
Part of me wants to yank the K-Jet and run stand alone but the value of the car would plummet.
I will have the car back on the road for good by the end of this month. It's a matter of working out the kinks at this point.