Overdrive options

approx. 700 h.p., 727, dana 60, 35-3800 convertor, 295 65 15 d. radials, approx. 3100 lbs., very docile till u stick ur foot in it. "Does like gasoline", even w/ the fuel inj. Would love to have a g.v. overdrive! Retired, guess I`ll have to get a part time job to afford one. LOL
Can a 200r4 be built to handle 700ish h.p. ?