I remember someone who tried to fit a downpipe that resembles like that, and he had some problems due to the O2 sensor.
I don't recall if it was a 1.8 or 2.0 engine.
It should fit as the 1.8 has a o2 sensor just after the flexi as pictures in the stainless manifold. As mentioned the second sensor is in the cat so that wont matter. I did recently email them asking if it would defo fit but they havent replied, im tempted ti get one myslef as i think it would look sweet in the engine bay.
Im going to mod my standard downpipe first as iv already made the piece up, il see how well it works. Every time I open the bonnet I do imagine how good a stainless manifold will look lol il drop you a text tho, could catch up for chat and get some pics.
Just the one mate. I've not owned a car with 2 cats - are you maybe thinking of the mid section silencer? On my Prelude it's cat shaped so could be confusing
2 lambda sensors, 1 in the manifold one in the cat I imagine, that was the set up on the 2.0l. Manifold differences aside between the engines if they're both OBDII I can't see why the sensor locations would be different. That aftermarket manifold has a bung on the manifold and the downpipe so you'd have flexibility as to where the the pre cat sensor was fitted anyway, if it is in a slightly different location on the 1.8l