My bro has a 93 4.0 4x4...in need of performance rockers. Where/what site would I be able to find them from?

try Competition Cams.
their magnum roller rockers are great, but unsure if they come for the 4.0l, and if so, if they go as steep as 1.9?

hope this helps,
chris
nrt racing

(if not email me, I might be able to track a part number down for you)
ctesla@sbcglobal.net