Performance parts for a 928 are
extremely expensive. Extremely.
I have kicked the snot out of some 944 Turbos with my 928, but my 928 is far from stock. (300rwhp@2900lbs)
928's are
not easy to work on, but then what Porsche is?
Dano your Shark sounds great- i recall you leaving me comments on my YouTube video about the exhaust note of mine too.

(Link to in car video of my 928 in my signature below)
I also like your black phonedials. I just put a set of Turbo Cup 16x8" phonedials on mine.
My 928 is in the shop right now getting a full paint job. Can't wait to get it back!