cam/converter selection

63 dart stock car. 360 2bbl 3.73 rear 904 trans 9-1 cr. 3/8 mile high banked dirt track. next engine build, on hand I have a new converter specs say 4000-4500 stall (advertized?) and a howards hyd cam 71841-09 specs say rpm range 2300-6000 intake duration at 050 is 235 ex dur is 243. advertized dur is 289 intake/297 exhaust. intake lift .488 ex is .480" lobe seperation is 109. do these sound like good choices or should I see if I can exchange em for another cam/tq if the companies will allow that? thank you for your time. RR