What converter stall should I use?

I in building a 1970 Dodge Dart with a 440 Sure Grip rear with 323 for now. my 727 transmission guy recommends 2800 to 3200 RPM.
what converters do you have and what do you recommend, below is my motor specs

1978 RV 440 motor. +30 0ver = 446ci 10.35.to1 fordged TRW Speed Pro pistons, Steel crank internally balanced. Comp cams .488 ,491 lift - Duration @.006 274, 286. 915 heads slightly cleaned up ports, upgraded vale train & Springs, Johnson BB lifters, Aluminum water pump housing and water pump, Speed Pro Harmonic balancer, Holley Street Dominator intake, Holley 750 mechanical DP, MSD 6AL, MSD 8546 race distributer and coil, Schumacker Ceramic coated Tri-Y header, Motor mounts and Torque arm.
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