It can be replaced seperatly. Sounds like you are looking at the right part from your description. Apparently the screws are really tough to get to though. I know Mike (protetype) on planetisuzoo.com just replaced the one on his '01 rodeo recently. You could pm him there for more info.

I've never done one so cant offer much help. Here is a pic of it I took for someone else though if it helps any..
[Linked Image]

--Dave

1999 Rodeo LS 3.2 4x4 5 Speed
32x11.50-15 BFG T/A KO on US Wheel 94 series
3" Lift - Rancho 9000x
Rear No-Slip Locker
Flowmaster 50 series SUV 2.25"

There is a very fine line between "hobby" and "mental illness." - Dave Barry