The first looks very similiar to the SSAC kit I just installed. The only thing I see different is the BOV flange may need to be welded on which is something I didn't want to have to worry about. That seems like a pain.
I would do a search on NASIOC for SSAC FMIC in the Private Classifieds Section. I just bought mine brand new for $325 shipped off of there.
Here's one local that may still be available. The last post is 10 May.
https://www.tamparacing.com/forums/s...02-03-wrx.html
Good Luck!