Which B&M trans cooler should I use 19,000-24,000-28,000GVW I am going to use the cooler with OUT going into the stock radiator.Im going to be useing a universal aluminum radiator.Also Im switching to a 3200-3500 stall if it matters.

i'm using the 28000 cooler, the race version with a 2400 stall and had no problems. with the 3000 stall and 3.23 gears i would add a temp gauge to monitor the tranny cause you would be slipping allot . unless you kept it in a lower gear to keep the rpms up.imo