I also go the low dollar route. Using the '68 383HP torque converter is the same unit as the street hemi's, except for the bolt size of course. This info was in one of the older Direct Connection manuals and there was a very good section telling about which converters the factory had used. Either way these 383 units(called the Falcon?) work out rather well for a stall around 2850 IIRC Good Luck!