how do you mount an sr side mount intercooler?

[AN89HATCH]

my side mount has both brakets on both sides, its just on the fender side, it wil line up with the air silencer mounts, but on the chassie side the bracket holes are facing forward, not sideways so theres nothing to connect it to. this is an s13 side mount btw. also I cut a huge hole way bigger than the outlined hole for the pipes to go threw, but when i mount the intercooler on just the air silencer brackets, the pipes barly fit therw the hole that i made, and the recirculation pipe is no were close even fitting, and this hole is atleast 1 and a half to 2 inchis bigger all the way around the outlined hole