Yeah Slee sells the same arm, but for $100 more. The steering arms and pitman arm need to be drilled out to 7/8", then you drop these inserts in that have the proper taper: http://www.ruffstuffspecialties.com/catalog/INSSTEER.html
Need to weld those in too?
Sounds like your cheap upgrade is costing you more with $24 worth of inserts and a steering arm on top of the ruff stuff steering kit, though still cheaper then the blue torch high steer kit.
