Should only rasp if its thin piped!! I know where there is a spare set to give it a go!!
I've got my APS ones going spare if you fancy them at a reasonable price, i get rasp now with the sports CAT's in even but its a great noise.
I would love to get headers to finish it off, and you can get them reasonably cheaply. Has anyone tried the japspeed ones...
http://www.japspeed.co.uk/Nissan-350Z/N ... -19-1-261/
I know that I go on about decent kit and most of the time its expensive but on the manifolds I would say go for some decent ones...
Japspeed
http://www.japspeed.co.uk/Nissan-350Z/N ... -19-1-261/
Fujitsubo
No comparrison IMO, quality of welds, materials, bends etc look so much better on the japanese ones....
I wouldnt be putting the japspeed ones on mine to find out that after a few months they were being removed and the old ones or another set were being replaced... Unless someone else on these boards has had them and tried them and given you a good report I think it would be an expensive trial!!
I also think you need to be careful about which ones you buy from the states due to the LHD / RHD differences on the Zed engine... Have a look at the DC ones, least they have been tried and tested over here.... On the Evo long term test car no less!