8.75 Ratio opinions

I have a 71 swinger with a 408 about 450 hp and 500 ft lb torque with a 727 auto and a open 3.55 rear end ratio " one wheel peeler " lol and am going to put a sure grip in it from dr diff but unsure if I want to keep the 3.55 or go to a 3.73 ratio . car is used for car shows and fun . comments greatly appreciated . thanks