Help control arm bushings

[London Shelby]

I have a 89 daytona shelby witht eh stamped steel control arms , one is cracked so some one gave me the 90-91 cast iron ones to replace them with. I went to napa to get replacement bushing and they only list 84-88 and 91-93 bushing both of which do not seem to fit the control arm, I need to get them on soon any one know what bushing I need and where to get them