I've disassembled my 68 suspension. Control arm bushings, ball joints, shocks, and swaybar ready for install. I had planned to replace the steering components too, but the tie rods, pitman, and idler arm look and feel okay (just covered in grease and dirt). Should I change them while it's apart, or just clean 'em up? Probably looking at ~$250 for all new parts. Worth it?