91 DODGE 350 VAN

Here's a link to the 24 spline converters that Summit has ... you can maybe cross reference to other brands from here:

https://www.summitracing.com/int/search/part-type/torque-converters/transmission-type/a-518/input-spline-quantity/24?N=4294949305+4294910418+4294925027&SortBy=Default&SortOrder=Default&retaillocation=int