I am running a Tsais header and 053 Dynamite pipe on mine. I triad an 086 on it and it also did pretty good. When you go to the buggy style pipes, you wind up with fuel nipple problems. The Dynamite has enough angle between the exhaust stinger and the fuel nipple to keep it out of the chassis plates. The only reason to recommend Tsais is the price is great and it is a stand alone header.
Tsais and 053 on a Picco...
There is the fuel nipple issue, see how close it is to the chassis plate? A regular 053 is a 35 degrees or so tighter. BB