Having gone the RS2EM and turbo route, I have received a query from a guy who wants to buy the original EM and turbo (to put on his 20 valve Audi 90 quattro). Neither of us know what they are worth. EM has 30,000 miles and turbo has 45,000 miles only. How much should i ask, to be fair to us both? Thanks, Tony Guttmann