Has any body who's installed headers ever tried these for their o2's?

 

two defoulers work fine

 

http://www.o2sim.com

 

Two O2 spacers work great, similar to your first link. Search O2 extender or HHO adapter and you will see many of em. I got mine on eBay.

 

They come in packs of two at the parts store. 18mm spark plug defouler. It's less than 4 bucks.

 

My concern with regular non-foulers is that I've seen some people on the forum saying they had to relocate their bung near the firewall so that the o2 sensor with the non-fouler won't hit the steering. So, I've been looking into the 90 degree o2 sensor extenders so that I won't have to relocate the bung. I'm kinda curious if anyone on here has tried the 90 degree ones?

 

Mine had no issue.