if he's a buddy, he oughtta let (help) you try to install it without paying him for it. if it works, you pay him. if it doesn't, you take it back out, no biggie. that being said, you oughtta be able to tell just by looking at them whether or not they're interchangeable.
It should work as long as the filter enclosure mounts up to the fender well the same. Good luck and give feedback! I'm sure others have considered this as well.
What kind of trd intake is it? is it the gen 1 with the conical filter or the one that has the GM style filter? if its a gen 1 it'll fit with no problem if its a gen 2 I wouldn't even consider it. for some reason it causes the MAF to be way off and cause lean engine codes. if your really looking for an intake get the afe intake or a gen 1 trd intake.