Ok, Can anyone say yes, or no wether or not I will be able to fit 17x9.5 et38 on my car? I'm lowered on Eibach springs with an RS. I got a guy that will get me all 4 wheels for $100. They will need adapters, and new tires.
Yes. If you want the wheels then buy them, how you get them to fit is up to you.
I recommend you dry fit them without tires to see how they look. Put them inside the wheelwell, get a close measurement for your spacers. Look around to see what clearance issues might be obvious.
Once you get assets and tires and everything is mounted, then take a test drive, inspect for any rubbing or clearance issues...
Worst case = the wheels don't work and you can resell them (keep your current set just in case)
.....drive it like you still owe the bank money