1. 98 silver, 18k miles, Dinan intake,exhaust,& chip. Koni shocks & springs. (All items mentioned were dealer installed) Mechanical inspection found no problems. Price $37,900
2. 97 Green, 18k miles, stock. (I would put in JimC chip, but have not decided on intake & exhaust) Mechanical inspection found no problems. Price $34,900.
My major concern is whether I should settle for the Dinan or get a stock M3 and put on JimC chip. Is the JimC that much better?