the way #1 and #2 tuck behind the#3 and #4 tubes looks to be about identical but at the they look to be about 4" longer before the collector. unlike the mac it is one piece and the can is not tapered. the mac comes in chrome or black and retains the factory manifold clamps
i like the lines that it follows past the collector towards the back wheel. i may have to make a new can for the mac i have sitting on the shelf....
retail on the mac is $377 with free shipping at most dealers yet he says it is a better deal and charges $45 in shipping