My friend, what is it that you ask?  Perhaps, you can find for what you seek with the USMC (oob13), as there is a similar weapon.  Do you wish for more info, or is your quest on a different path?  I know that the 53 is a mighty workhorse.  It was there when the Marines saved Scott O'Brady.  As was the mighty Whiskey (AH-1W).  
Here is a bit to aid you on your magnificent quest:
"US Air Force upgrade of Special Operations Forces combat rescue and recovery fleet; 31 HH-53Bs, HH-53Cs and CH-53Cs converted at NAS Pensacola, Florida, beginning 1986, to MH-53J Pave Low III Enhanced; similar to 11 HH-53H Pave Low III produced earlier, eight survivors of which also converted to MH-53Js; programme completed in 1990. MH-53Js upgraded to MH-53M standard. MH-53J remains in service for training purposes."  Janes Info Group