I.D. this turbo?
 

Hi folks, here I am with another turbo I can't I.D. Sorry no pics. Thot maybe Busa or some of you other "old timers" mite have some idea. It's off of a 90 International 4700 series heavy truck, a big Diesel six banger. It's a Garrett, but no mfg. tag any where. On top of compr. hsg, is stamped 3705 6. On cold side hsg. cast in, AR .5 MII. On hot side, cast in, AR 1.0 MI. also cast in, 276. On side of comp. hsg. cast in of coarse, Garrett w/an elongated O laid on it's side. That's all I can find. Sorry not much info. Thanks guys, S.