I have been told by the transmission shop my torque converter is on its way out . With a 187,000 miles the trans should also be rebuilt. Having to replace the torque converter I was thinking of Circle D. single disc 9 3/4. stall speed of 3000. I have been told my oem converter has a stall speed of 1900. My question is will I need a retune or will this be plug n play ? I have a SCT Xcal custom tune loaded from a vendor for correction of 4:10 gear change, speedo, shift points, line pressure, timming the usual.