check this out...had a similar thought about power coating the whole thing...
http://www.off-road.com/jeep/cherokee/xjproducts/company/linex/linex.htm
and
http://www.off-road.com/jeep/cherokee/xjproducts/company/linex/linex2.htm
http://www.off-road.com/jeep/cherokee/xjproducts/company/linex/linex.htm
and
http://www.off-road.com/jeep/cherokee/xjproducts/company/linex/linex2.htm