727 performance upgrade tricks

So I'm building my son a 727 for his Ramcharger I realize it's not a abody but I thought it would be okay my transmission background is from the dealerships have worked at so very little performance upgrade stuff stock 727, 46 and 47 RH's and RE's so my question is what's your little tricks to make one tougher should be running about a 2500 stall in it and it will be Street driven daily any advice you did will be greatly appreciated thanks and have a good day