I priced a new Griffin 2 core with 1 1/4" tubes in a 2 3/4" thick core for my 51 gmc 1 ton flat bed for $640.00. I am also trying to determine the best radiator for my truck build. I am running a little different setup, I have a 454 with the four speed. I had to call the number on the website in order to get info. The website is www.griffinrad.com. Maybe this will help. I have never used one these radiators before, I am hoping to get feed back from this forum. I have also priced radiators from US Radiator and Jim Carter's that are more the traditional style radiator, I want to make certain that the engine will stay cool. Good luck with your search Tomy2tone01.