Mine is a 1973 P model 182.
Will this Cessna 310 frok fit?

part number is 0842000-30

Looks like the exact one I put on my C175B. I would think it would work, waiting for others to respond.
Dave

It will fit!
If you have the piston with 2 holes (older 182) you will need to cut off the bottom one. Take to a machine shop and get them to do it with a lathe then put a slight chamfer on the bottom so the block will go on easier.
Also will need to get a field approval.

Yes that will work. I just removed one from my 182. I also could give you a copy of a field approval 337 if you want. Not much data besides the faa stamp but that might be enough to get it through your guy.

You might get away with just a logbook entry. The HD fork may be listed in the 182 parts manual, and it is generally the 310 nose fork. It was in the parts manual for my 74-182 and only required a logbook entry.