hey bro, don't know how obvious this is so I'll just add this here to help those that may not realize what it is that I'm about to say.
the nismo does not bolt right into an fx, aside from the center being too short & needing either the g35 extensions or the Y pipe extended you will also need to cut the tailpipes & extend them out from the muffler as the FX bumper is larger with more overhang than the Z's & G's. this much I assume everyone knows...
where the problems start is when you wind up just going to a regular muffler shop to have this "install" done. regular muffler shop will probably be the cheapest way to go, BUT, there is an issue here that might not be realized by most. this issue is that the Nismo exhaust is made from 304 stainless steel. most exhaust shops are NOT going to be equipt to do these extensions the right way & if there done wrong the extensions will not last. the exhaust will actually start to fall apart at these improperly extended areas within a year or 2, especially if you live in a state that gets snow in the winter, but this will even affect those that live in nice year round climates too as the exhaust will always build up condensation from the inside too ... I think we have seen a few Nismo's here that were done improperly & the resulting problems from this. tail pipes actually falling off & stuff like that...
it don't make a lot of sense to buy a very expensive quality piece like this & then butcher it with an inadequate modification as the exhaust is only going to be as good as it's weakest link. if these extensions are done with standard mild steel piping as most exhaust shops will do then you are turning a high quality exhaust into something a bit more crappy. these extensions should be done with 304 ss AND they also need to be welded properly, with the correct stainless steel filler wire as it's welded. Ideally the best way for these welds to be performed is by being TIG welded with the proper SS filler, again, something most ordinary exhaust shops are not going to be able to provide.
my advice is to seek out either a high end exhaust shop who does have the capability of stainless steel fabrication if you can find one, or better yet, to source this install job from a performance shop instead, again someone who is equipt to deal with stainless steel properly... you should also realize that this will def add a few hundred to the equation here... when Aiya needed his done I did not have the capability to weld stainless myself so I turned him to a race car fabrication guy I use... he is very expensive & winded up charging us too much. partially because I requested that he replace the whole extension from the muffler with one mandrel bent elbow instead of cutting & extending, thereby leaving a few extra visible seems. he special ordered the madrel bends & the straight pipes needed in 304ss & charged us for this but in the end he winded up not doing it the way I asked because he wasn't comfortable cutting & welding it so close to the muffler canister & instead did just what I was looking to avoid, which was just cut the tailpipes & add a few inches extension. with the labor & materials which he winded up not even using the mandrel bends, it winded up costing us $450... def more than it should have been, but realistically the right price for something like this still would be in the $300-$350 range, assuming you are also extending the Y... don't think your going to get this whole thing done properly for cheap
spend a little more to have the stainless steel done correctly & the exhaust should last the life of your fx, or do it cheaply & wind up with the infamous self ejecting muffler tips
