Whole dealing with rebuilding this thing I sent so pictures and video to the shop. The blower I bought second hand - supposedly almost brand new but that's another story - was told it was an Si trim with the upgraded impeller.
The blower ended up being fubar, hence my conversations with the rebuild shop in the first place.
But now it seems I got fvcked even more and it isn't an Si trim impeller at all
Found some decent images.
Here is a stock sci trim right from Stillen:
Here is a picture of mine I took right before packaging it up this morning:
This ain't Sesame Street, one of these things is exactly the fvcking same as the other
So not only was it beat to ****, broken, missing parts, packed like ****, damaged, it wasn't even what he told me it was.