Porting E7's

I was wondering how hard would it to do a homemade port job on a set of E7's that I got for free? Also what is the average price to have a shop to port heads? I don't want to do anything crazy, just enough to flow a good amount of air.
Thanks
Jhery
 
It should not be to hard of a job. I would say that you would be charged anywhere from $250-$500 depending on how much you had done ans where you take them. Maybe T-Moss will jump in with some advice.