CR2 front bulkhead question

[fredswain]

Please forgive my ignorance on this. I bought my Cr2 used last year but I have no knowledge of all the variations in XXX parts. The front bulkhead on mine has stripped screw holes and I need to purchase a new one. I have found 3 part numbers for them though and am unsure which one is correct. They are A-4122, A-9713, and A-9714. Any help would be appreciated.

[luniemiester]

Info u need here http://www.nortechracing.com/ac/cr2/index.html

[fredswain]

That's answers that! Thank you.

What were the differences between them? They look the same but clearly they aren't.