You'll have to forgive me, but the Pinto was a long time ago... When we had an ITB Pinto 2.3liter, we used a VW Scirocco Radiator. It had an the expansion tank on the end with the cap on the top (as opposed to Rabbits/Golfs with remote tanks). You may want to explore either option, but I can tell you that it worked VERY well! If memory serves, the VW Radiator was a cool 10 lbs. lighter than OE, used less coolant, cooled better and was cheap. While Summit does supply Scirocco style radiators, a cheaper bet would be to find your local VW parts house, as many stock these things for about $80. Just make sure to get one that is Aluminum/Plastic (as that is where the weight savings is). The parts stores should have dimensions listed for the various radiators, so just take a look through to get the widest Scirocco version that will still fit the front of the Pinto. For what its worth, we used a radiator for an 86 Golf with a/c in our ITB Mustang with great success, just had to find somewhere to mount the VW Coolant Reservoir. Good luck.
[This message has been edited by Kazoo (edited February 20, 2004).]