hey guys got an 87gn and im making it manual steering. what i did was install a manual steering box from an 82-93 chevy s10. bolt holes match and length is good on the steering shaft, however the pitman arm thats on the car now doenst work. the splines are smaller in diameter on the s10 box, so the pitman arm has play in it. so im thinking of just getting the right pitman arm but pepboys, autozone, etc. have no clue is there anybody out there that can givr me advice thanks so much jay