Zen,
Here's a pic of the BAS with a muffler, like you describe. I just happened to stumble accross it while looking through some old mags...
It makes a 180 deg turn.... and its on a drag bug. This is nice because then you can put the oil cooler on the other side and not have to worry about the heat getting to the cooler.
One question Zen... looks like the oil filter in stock location will not work with the BAS like in the picture... Whats your solution ?
I'm going to be ordering my oil cooler parts next week so I need to address this.
Sandeep