Do they made an air filter like this for the Blazers and if there would be any horsepower gain or anything at all out of switching over to one?

http://www.summitracing.com/parts/EDL-1221/

 

Do you have one that looks similair now? I'm not sure what your setup is but with MAF, temp. sensors etc I'd doubt it.

 

You need to check the diameter of your carb. Says it will fit 5 1/8". Comes with a paper filter that you can change out for a K&N or other filter.

 

I would have to look. But if it would work would there be any benefits of that style versus the style I have now where the air filter is surrounded by the housing?
The only thing I really know of that connects to the air filter housing is my PCV hose which I don't know what I would do with it if I changed it out for something different.