I would reccomend going a little north into Madison Wisconsin. You will not find a better shop than Performance Engine and Machine. Keith Hills is a tremendous engine builder and is exceptional with all Ford products....in fact one of his personal cars is a Yellow Pantera (I noticed your sig). Finding a good engine builder is tough, finding one that is competent with Fords and has Pantera knowledge is extremly difficult. He built the 68 428 CJ motor for my KR shelby, a friends KR, My 68.5 CJ fastback, 65 GT350 and will get all of my future builds.
Phone: 608-274-7585 ask for Keith
tell him Rob from Spring Green Motors sent you.