I small piece of advice. Get the good insulation for the firewall & floorboard area of the cab. Otherwise, your dash may feel like a pizza oven. When I say good I mean a product like 'Dynamat'. It's pricy but worth it when you get big blocks like chevys, nailheads, 455 rockets, etc. close to the fire wall. Another problem is the heat behind the dash makes the A/C hoses sweat and water will drip on your sweetheart's feet, and OH BOY, 'been there/done that'.
