Got some rot, have a question about LMC panels

[badmix]

Ive got some rot in my truck, its on the drivers side, at the very bottom of the body, just behind the drivers door. Is # 30 the part I need?

http://www.lmctruck.com/icatalog/bzc/full.aspx?Page=21

 

[USSkoval]

Yes, unless you are talking about rust inside the cab.

 

[badmix]

My interior is line Xd so no worries, this is on the outside as far as I can tell.