York rake hydraulic angle kit

[nickel plate]

I have a York RI 8' rake with the standard mechanical angle adjusting arm and would like to upgrade to a hydraulic operated angle . Does anyone have this factory kit as seen in the photo and can tell me the cylinder's diameter, stroke and rod diameter? I see that it is a "Chief" cylinder so I probably can get it at TSC or any number of other outlets for a lot less than what York wants for it, shipped to me it will run around $500.00+. I did some searching on their http://yorkmodern.com website and didn't find those measurements-state secret.
OR, can you please instruct me on how to determine what stroke length is needed as I can attach mine and do the measuring.
This is also posted today in the HYDRAULICS section with the same title-hope I didn't break a rule but it seemed to be about 50/50 in either section.

 

[nickel plate]

MODERATOR:
Please cancel out my post in the ATTACHMENTS section as I thought a 50/50 chance in this ATTACHMENT section and the HYDRAULICS section would yield some help. As it is, the HYDRAULICS section has answered all of my questions. Thank you.