Just want to find out from other owners - have an 87 N/A and i want to know what everyone believes to be the best aftermarket intake for that model and where would i find it online? I've already redone my exhaust, and it is well tuned up, this seems like the next of the easy steps to increasing power to me.

 

92-96 Prelude piping routed into the bumper for cold air.

 

All of the aftermarket cone filters have similar gains, but some filter better than others. I know that the K&N and Apex (and I assume the Bonez, since its the same style filter as K&N) filter the best, while the HKS mushroom filter is by far the worst.
After that, you need to do some sort of cold air intake to see any gains at all, because otherwise you will be sucking in hot engine bay air.

 

Get a K&N cone and route it down behind the splash guard. If you can't do that, then build a box around the cone to protect it from the heat and attach the pipe from the stock fan shrowd to it to provide good air flow.