Hey guys i know you might think this is a stupid Question but i know it's a 1in hole but how many and were cause i want to put them in my 300.

......THANX.....

 

A better way to go is the EHS Racing airbox lid. If you are working on the cheap, you can install UNI airbox filters that will help keep the airbox cleaner than just leaving the wholes open. The thing with holes is that you can add them one at a time and see how it goes. On the 300EX, you could probably use a whole bunch, but you may eventually add to much air for your exhaust.

 

Keep adding holes until there is no more performance increase. Then cover up a few holes and restrict the flow a bit to make sure you run rich.