the exhaust should fit. You'll just need to add a bit more length to it after the cat either i the form of 3/3.5" depending on the diameter of the exhaust.
like pkblade stated there are many places where you can get pfc and fmic's from. Its best to look around and find out general prices b/c bargains comes up all the time especially in the for sale section and group buys. btw if you want some maintence done to car at a relatively cheap price refer to this thread here. http://www.skylinesaustralia.com/forums/sh...ead.php?t=74556
yeah his car. im registered on one of the holden forums, cant remember which one though. He wants exhaust, headers, extractors and what not. Hmm..maybe i should ask in on of the forums.