street cam for 360 magnum

i dont know what the factory cam specs are. i talked with the previous owner today and he said the converter is a 10" turbo action 3200 stall. he feels a cam swap would really wake it up(hes a long time drag racer w/many wins)and i trust his judgement. but hes not willing to give up any specs on what would be good(just the way he is, lol!) which would be better, hydraulic roller or hydraulic flat? if i choose the flat tappet is there an off the shelf pushrod that i can use? years ago when i owned a 68 340 barracuda i rebuilt the engine in highschool shop class, and put a comp 280 magnum cam in it and it worked great! or would i be better off with a roller. thanks for the replys to the new guy! mike t