Been awhile since I have been on, but am looking to raise my truck a little more. I bought this particular truck from an individual who had it lifted and couldn't remember what size was on it.

I can not find any kind of manufacturer on it anywhere. Any help would be great so I can figure out my next step with it. It is a 2001 F250 CC. It has 315/75/16 Buckshots on it currently. 2.5" block in the rear and measures 49.5" rear and 48" front from the ground to the fender lip. I can't get pictures right now unfortunately, but will try today. Do I need more info or can someone figure this out with what I have given??
Thanks in advance for any help or pointers!