well i used the 2000 grit and some polish and the fuel rails look real good. i couldn't really get the intake bars to come up though, going to have to try again.
most of the discoloration came off of the tip with the 2000 grit and polish, but i think i'm going to try one of those home remedies or stainless cleaner to get the last bit.
if i get good at this, i'll polish pretty much anything i can
thanks guys
