Nice man is he gonna charge you hourly for the re tune or is it still the flat dyno fee? That's something I meant to ask him myself. I was thinking of either going to a smaller SC pulley or doing headers. (One or the other I can't decide at the moment) and I didn't know if he had tuned you previously if the rate for the tune is different.
I still run the stock 3:55, it's a decent gear not too tall and good for a s/c car. I put 3:73 in the 03 that I had though. Made a nice difference. You may want to put a nice soft compound tire on the rear after you get them put in, I remember it being real easy to spin after they went in sometimes when I didn't want too. It's a good gear though.