Hustler 950 running slow

[Dino]

I finally got the clutch off the shaft after I took the transmission off. Can anyone tell me if this is a salsbury 780 driven clutch from the pic? There are no numbers on it. the ramp is stamped "35 degree" and the number on the ramp is 703689. It has a 7/8" bore and 3/16" key. Thanks.