Value these days id probably highest for an unmodified cossie...but since I'm not a fan of rationalizing affairs of the heart, I'd say DO IT!

As long as the car is in good nick, extra power would make it feel like it did all those years ago before you got used to 220 horses

Only problem is finding a genuine 3 bar map...which is one reason why I got stuck in stg 2 by GGR. It's a blast anyway, and don't have to be worried about being shamed by any diesel volkswagens...