Help on choosing a stall converter

Got lots of questions..I have a 68 cuda,360 with J heads,headers,MSD ignition,accel super coil,still have the cast intake with a 600 cfm edlebrock,& 727 tranny.I ran 14.6 last year,never had a good take off,going to put a converter in it,but don't want nothing to radicle on the street..Any help would be great...thanks...Bob


Gonna need more info like, rear end ratio, cam specs if ya got them and what speed are ya shifting at going down the track.

Terry