Hello dear community members, one already before away, I am ONLY a hobby screwdriver and do not know me particularly well with cars / Smart out ?? My problem is the following, I drive a Smart 451 Turbo, year 2007 with 84 HP (officially ??) with a end pot with which the cat was still integrated. ….and now my real problem: These end pots are used as good as not to get because this kind of end pot was broken very often, be it by rust, on burst sweat seams or simply by that the inside cat has solved itself ?? And now my question: is it possible to replace this kind of end pot with a pot with external cat ? If yes, the possibly high conversion effort is worthwhile ? It is just so that there are very many, well used end pots with ext. Kat on the net there is however as well as no used pot with integrated Kat there. I would be really grateful for you for usable information . And still what to end, it could be in the past that the topic was already a forum but I did not have a lot to attend here.