St202 and St215 beams 3s exhaust header swap

[xsspeed]

Has anyone bothered with this? The caldina headers have the cat's built in which I want to ditch. I have some headers from my st202 beams, difference is the 02 sensor - caldina's is mounted in the middle of the cat's where the celica mounts at the mottom of the 4-2 collector - presumably these are both denso 4 wire 02 sensors so should work?

[Celica RA45]

as long as you have the back part of the st202 beams pipes then the oxy sensor will fit further down

[xsspeed]

you mean on the 2-1 section? I don't, was thinking of just getting a thread welded into one of the cylinders extractors