I've been looking at a 1995 Volvo 850 T-5R wagon for sale near me. It looks to be in great cosmetic and mechanical shape despite having 198,000 miles. It has a Motronic 4.4 conversion 5-speed manual swap and an ARD Orange tune. Should I be wary of a car with a swap and this specific ECU tune? The owner said that the swap was performed by a Volvo specialist. The owner originally had it priced at 7500$ and has now dropped the price to 6000$ in hopes of selling the car soon. It sounds like the deal of the century to me because I know how rare these Volvo's are. What would you say, is it worth it?