My Intercooler, Too large? Options

[Negative]

Tweak, Pressure, Playr - this pic looks just like my IC. The only dimension I know is it's 3" thick. The reason Is I got it on a bad debt from a friend. It's brand new and I'd like to use it on my 5S-FTE but I want to make sure it's gonna be OK. You guys have a lot of knowledge and first hand experience.

I know a smaller one would be optimal and one this large will probably give me pressure drop but this one was free and I'm sorta strapped for cash with all the other parts I've been getting so...
Let me know what your opinions are. Thanks in advance.

BTW - Other opinions are wanted too - I just neamed those guys cause they for sure know what's up.

[Negative]

OEM - I really dislike bodykits on the 6th Gen Celica. When I'm all done my body will consist of:
-Stock body with facelift front and wing
-Stock Sideskirts
-GT4 Hood [yes I know doesn't look right to most with facelift/SS-III front - but it looks great to me]
-OEM front Exstensions
-OEM Rear Mudflaps
And that's it. I really like the way that combo looks as I already did a Photoshop of it plus I already have all of it in place except the OEM Exstensions.
Now with all that said will the IC be ok even though there is no air to the top? It will get as much air as is possible from the mouth and the small space above it. which would still be slightly more than a 6"tall IC because I will place it as low as possible [lower than the pic above by at least 3"]. Will the air going up top be a problem? Is there a way to block it off on the inside from going up top?
I guess If I had to I could always add another opening/grill to the top of the bumper like someone on here did a few years ago but that would be well down the road and I'd like to avoid it if at all possible.
I just really like the way that body combo looks and it would be unique using only OEM available parts.