I use the bouchillion kits when I do swaps for the easy of adjustment. I can;t offer any help on how to do yours as I nevever changed one over with out swapping it over to an updated style.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram