Not to take issue with Greg's comments, but since the car already has a transplanted 2.5, then matching numbers is already out the window. The 3.0 engine will look vitually indistinguishable if the original valve covers, plenum, ect. are used. I have done this with my late 85 gtv6, and Greg is right about the apprx 4 mpg difference, but.......the extra horsepower and torque is addictive. It is just more of a good thing
To my way of thinking, a gtv6 at this time is worth slightly more or is more desirable with a nice conversion to 3.0. Only time will tell if an original condition, matching numbers gtv6 will command a significantly higher price than a equally nice car with appropriate upgrades. Maybe it depends on the owners view of whether he sees the car as something he drives vrs something he collects. Wouldn't it be nice though to see an original matching numbers gtv6 go across Barrett Jackson for $50K?
