I have a '84 K10 Blazer Diesel. The drivers side post where the striker is located is rusted out.
At present it is pointed at the passenger door. Can a new post be had? Who should I get to fix this problem? Where can I get a new one or is my only option a used one? Any advice you can give me will be greatly appreciated!

 

*Moved to 'Full Size K5 Tech' section*

 

I could not find this area in either LMC Truck's catalog nor the Brother's Truck Parts catalog that I have. Your most likely best bet is to try to find a good donor section.

I have a '90 Suburban that I will not need this area of the 'B' post on. I also have a set of rear quarters off of a similar year to your '84 that I could see what, if any differences there are between the two. I wouldn't be opposed to taking a saws-all to the 'B' pillar on the 'burb if that area would work for you. The 'burb already has the roof cut off behind the 'B' post and the bed floor all out of it. The roof was the only thing holding the rear quarters on due to rust taking care of the 'C' post mounting and all the way down the sides of the bed inside.