Stole my brothers KFs over the weekend. Idk offset specs but they were too weak. I added a 12mm spacer in the rear and didn't have one for the front. I could probably rebuild these and have a 5in lip front and 6in lip rear. I'd also need to lower the front some more.
19x9 4" lip
19x10 4.5" lip
Edit:
Maxed out the fronts. Sits a lot better. I also took the time to add mporiums 1pc under tray for clearance. Believe it or not, no rubbing.