A 22" radiator with a built motor and AC should get the maximum cooling available. That is dual 1 1/4" tubes. All other options fall short. AS I have said in the past, the smaller volume radiators may get the job done, others will say they have had success, but what it runs hot after you've made a decision and purchase? Cold Case, Griffin, DeWitte and custom are your options. PM me if you want a forum member price on the Cold Case rad.
Either way, good luck! It sounds like it's going to be a bad *** car.