Greetings - Am seriously considering trading a 99 V70XC w/75k miles (purchased with 71k miles for 9 months ago for $16,900), for a 99 V70XC-R that has 22.5k miles. The dealer is asking $24k for the car. How different is the "R" from the other, besides engine? By 22k miles, what ordinarily should have been done? Is there anything I should watch out for? Grateful for any advice.... --Mark