I'm not opposed to the classic Cragar SS wheels, but I have to vote for Rallys because that's what I sport on my own truck... 15x8 front & 15x10 out back! If it was me, since you already own them, I'd spiff up the rallys with fresh coat of rattle can paint after you get your truck painted and see what you think before dropping the cash for any new wheels... Just a thought.
Heres my truck with with rallys... '79 Sierra Classic