The intercooler came with air diverter. :D

 

Alright...lets see if i can do this w/o pictures as I am way too lazy to take them now...

There are four Torks bolts on your stock IC cover...two long and two short.
Remove those. Then you will have to remove the IC covers around the horn. To do that remove the 8 torks bolts (4 on each side) that tighten the brackets around the boots. The Stock IC should be able to be pulled up (toward the windshield). Or first remove the brakets holding the stock IC. I think its 2 10mm bolts on each side... You will no need these brakets at all anymore. Now you will see your Intake manifold...

I am not sure where the two screw in supports fit into the picture...but they screw in somewhere to help support the Alta IC. You'll be playing around with them to seat it right. Put the lower parts of the brakets around the boots (remember that the lower section is the one with the threading) and replace the bigger boot first (passenger side) with the IC attached... Then put the boot around the IC horn on the driver side and put the IC into that (if you dont have the lower parts of the bracket on the driver side then its okay, you can jimmy them in after) Then put the top of the brackets back on, and the IC cover...and whala...ENJOY.