[IC27A] C22 parts for a C27

[mlong9876]

I put an ad up on Craigslist for various replacement parts to  anyone that may 
be salvaging or parting out a boat. One guy got back to me and told me that he 
had parted out a Catalina 22 and probably had a lot of parts that would fit. I 
was just wondering if anyone here knows how many (if any) of the parts are 
interchangeable? 
He sent me a picture of the rudder (mine is delaminated) but I can't tell if 
it's the same and I don't know if they are interchangeable.