Fast ratio steering '67 Cuda

Hey all, I'm in need of a idler arm only but have only found this fast ratio "Kit" so far. http://www.summitracing.com/parts/pof-116-10026
Can I just swap out the parts be OK?

I think so, without looking, check out Firm Feel. They probably have more info. Make sure they will fit your steering. 73 up?