Not that stars matter or anything but actually Chris Boggas was our highest rated recruit ever, and that worked out swimmingly. 
Are you sure? I think he was around 12 or 13 among OL which would not put him in the rivals100. But he was a 4 star and he did have an offer from Tejas.
He was in the Rivals 100, Top O-Lineman out of Texas, IIRC. I also believe it was a big deal in Texas when KSU scored him.
Boggas lasted 2 years in the system, then dropped out, came back for one more year, and then failed out. He was later arrested for breaking into Snyder's house and stole some valuable baseballs or something.
Daniel Davis was a five star RB out of JUCO.
Marvin Simmons was a highly recuited four star.