STS boost!!!!
longtubes *could* be better if they were ceramic coated and even then they wouldnt hold in heat better than stockers that were ported and coated. you're SLP's will work for now, but if you want earlier spool then the stockers would be better
Keep in mind that the space between the foglights is 19-20" MAX. And with the bumper installed, those big foglight openings take up about an inch or two of that space.
My IC is 18x12.5x3.5 and has 2.5" outlets and flows vertically. I would have preferred 3" but 2.5 fits nicely above and below the foglights without having to trim the recessed fog housing on the bumper.
check out the picture below to get an idea. That box is about 18x12x4


