I bought my Rancho 9000 shocks today

Having them put on Wednesday!!!
But I have to tell you, getting thru the discussion at 4wheelparts was incredibly laborious
First I was told my 35's would not fit...I said..."go take a look".
Then I was told and argued with, that my truck was actually a Trailblazer
I was asked when looking up the part # for the Rancho's, if my truck had "air ride" in the back??? WTF?? I said "no, I'm sorry, it's an H3, you must be confusing it with an H2??". He said, "we've had a couple of H3's in here with air ride suspensions in the back"
He also said, that how I could have gone 36k on OEM shocks was impossible. "OEM shocks are all crap, I don't care how much you spent on that Hummer."
WHATEVER!!!
Next question, do I trust them to install my shocks?? It's a simple enough job, but sheesh. Hopefully the monkeys in the back know what they are doing.
Worried
