Originally Posted by mantra1

It's a nice uppipe and if you can find it for $250, then get it.

Pros:

Tapered design
Flex section with w/SS innertube (prevents exhaust gases from touching flex material)
Cast Iron to keep the heat in

Cons:

Expensive
Cast Iron design prevents from tapping an aftermarket egt gauge (no welding)

After my MRT Flex Uppipe blew out, I had to make a decision fast (no down time) and Mastro had one in stock. Works great and gained about 100 rpm in spool up (no SHIT!). Also helps having RA gears too. Good luck with the install.