hey i know there is a thread on polishing already but what i'm interested in is port matching.

http://www.sa-motorsports.com/diyport.shtm

this link pretty much shows you all the tools you need. i'm pretty much positive that most of these tools can be had with a dremel and you don't HAVE to have an air powered grinding tool.

that said if you look through briefly they gasket match all the ports. my question is are the gaskets for the: engine/exhaust mani, exhaust mani/turbo (twin scroll), hotside/o2 housing, are these gaskets all precisely made to fit exactly where the ports should be matched?

because if they're not the only thing i can think of is marking the end that is larger and then pressing the receiving end to get a mark for where the ports are matched. this is pretty easily done for the engine/mani gasket because you can clearly see the soot build up but i might imagine that it is less obvious for the other connections.

for reference

http://users2.ev1.net/~subaru/evo_web/evo_exhaust.htm