My new burb and I have a few ????

[Whyhike]

I got this 70 of a guy who got it from some guy. But someone as been working on it. seems lowered but not sure how much and idea? Tire size is 275/60/15. Most pictures I see of 70's have a different front clip this looks more like 68, did suburbans lag behind in facelifts like the did in later models or did someone change it out? Thanks for all the help. Im sure I will have many more questions as I start to fix her up a bit more.