Blacktop S14 motors are great motors. They may not have the greatest horsepower potential of the red top , but they are much newer, almost always much lower mileage, and they come witha couple of choice items from the factory.

overall it's a good engine, and i would take whichever motor, whether it s13 or s14 that had the best price per mileage.

if its a choice between a 40,000 km s14 or a 95,000 s13 , i'm going witht he s14 motor.

if i was going to tear it all down and build it for all out circuit?
i'm going with the s13 motor.

hope this helps.

amtt