Crazy Criter

I have in my posession one of Ford's standard Hydraulic Roller camshafts typically installed into mid 80's 5.0 Mustangs. I feel fairly certain that it is either an e303, f303, or x303 camshaft, but I do not know which one it is. I pulled it out of a 1985 Mustang. The only markings I can see are on the rear journal facing and it reads as follows: H15 with a large "D" stamped across the 15 in a diagonal manner. Does anyone out there have any idea what kind of cam this is? If it is an e303 I would like to put it in my 302 Rat Motor. TIA for any help.

vfast

mmm not sure you can take it to a machinist and he can measure lift and all that good stuff