I would like to get a 02 spacer for my rear 02 sensor. I see on YouTube people who use the straight ones have to cut away some plastic shields because there is not enough room. Not sure what it is, but the pipe goes big (expansion chamber) before and after the 02 hole. Seem like if I used the 90*, it would put the top right up against the expansion chamber. Looks like I'd need to use the 45*. Do not have smog here, not debating if bad or good, works or not, was wondering the room for straight, 90* angle, and a 45* angle 02 spacer. Thank you, ebm
