yep thats how it's done, short brackets at the top and the longer brackets at th bottom.I think the vast majority of these cheaper IC kits come from the same factory! I drilled into the bumper bar to utilise the shorter brackets for the top. Bottom/longer ones i think i bent into a new shape and used some handy holes in the crossmember.
Have fitted one on my car when you take the original cooler off you will see the small probe thingy just carefully drill a hole in the same place and refit, also i had alot of trouble as the intercoller for the R34GTR is designed to fit without the aircon system so i had to make all new brackets!!!!!! but looks/works wellPlanning on fitting this tonight so any pointers on the boost nipple before I get started would be helpful