I would never suggest doing any -53 sqn other than -461 (been there 1976-1980/1981-1985)but there are numerous other sqns using the E model--I believe still:HMT-302; HMH-361,-461,-462,-464,-465,-466,-769,-772.
as per references(marking placement) check the individual sqn web sites, military.com, photobucket (search..ch53..).
maybe a Navy version ??-I don't know if they transitioned solely to the MH or still use the CH-53E.
Brian