Well, you're not gonna find anything to bolt onto something that obscure as far as customizers go. I'd suggest going to the Speedway site (www.speedwaymotors.com
) and maybe even JC Whitney, and look for tail lights. Anything you do will require some custom work. I'm assuming this is a Grand Marquis? Large square tail lights. You could fabricate a flat panel to fill the tail light area, paint black or body color. Could be flush or recessed some. Then put in multiple smaller lights. Speedway and JCW will have some selections. I don't think I'd use anything that sticks way out like 59 Caddy tail ligihts though. Multiple round LED lights might work -- red tail and stop, yellow turn -- one each function.