What year truck do you have? Do you have the smog pump on yours? What is on there now? Stock air box? Look on Tacoma World too. Hopefully somebody on here who is smarter than me will chime in. You could download instructions for something similar like an afe. They have instructions on their website. It wouldn't be exact but close enough.
Here's mine. It wasn't that hard. There were a few bolts to the fender. Relocate the maf sensor, that's it in the
middle of the tube. I had to fiddle with it to get the filter in. You will have to relocate the smog pump because it's in the way. It's a bracket I think. Not a lot of wrenching.