as far as an intercooler. I have one like the one you want to buy. 3" tubing. Seems it can go somewhere, but not sure where. I haven't had time to mess with it. Somewhere on youtube a kid has a van with an intercooler. but there isnt a bumper on it yet. But he did it.
as far as i know, they are all the same. i don't have a y pipe yet either. so i didn't bother exploring how to squeeze an intercooler up threre.
I wonder if there is even a big bennefit to even having an intercooler. These aren't rice burners. These are slow and low rpm iron tanks.
Do semi's have intercoolers?