a local guy wants to buy the motor since in upgrading. I want to sell the heads, intake, and short block seprate. I was thinking 300 for the intake 400 for the heads but what about the short block?Id guess it has 85000ish k miles. the odo reads 89k but i drove for 20 with the 3.73s without changing the speedo gear in the tranny. Does that sound right for miles?