I recently bought this truck and I'm not quite sure what suspension lift is on it. It has 4.5" blocks on the back, which leads me to believe it is a 6" lift kit, but it looks so much taller than that. Those are 35" tires the truck is sitting on. My guess is it came from Skyjacker. The previous owner is also unsure of how tall the lift is due to these old f150 4x4s having a decent amount of tire room even in stock condition. Anyone have an idea?