Thanks for the info ddgonzal on the tachometer, yes they are real Hayashi Street, imported from Japan to Portugal
Some updates, last saturday my "blue ute" gain a new exhaust, this is equal to the one mounted on the 1200 cars that run on the 1200 Trophy, its made by Escapes do Areeiro
here are the photos:

The old pipe

the old exhaust


the new pipe

the new exhaust



just mounted


Video with the new sound
http://youtu.be/BPCzATD_4oQ