As a side note as far as fitting around heat shields and such go - I ripped most/all of the factory shielding off, as ~10 years of Winter had already caused them to vibrate like mad.
I wrapped the cat (well, not the cat, but the piping) in heat wrap and have never had any issues.
Zetec....is that like Vtec or something???
Zetec Crew #103/ATX Faction #27 (retired)