Mac's makes a 90 deg. adapter for the Saito (and others) to get you out of cutting th
Could you go into this a little more? I just ordered the MACS setup you described. Where did you run ther muffler to? Where did you mount it and how?
As far as cutting the firewall, I can see needing to carve a notch for the stock muffler to fit (without the MACS setup), but I'm reading the word 'tunnel' here in describing a fix. Do they mean just carving a half-moon out of the bottom edge of the firewall, or actually routing the muffler into and then back out of the fuse?
B-ski