Good idea on rebuilding the 12si alternator for more amps, should last a long time. Most of the aftermarket 100+ amp Chrome alternator's are 10si based and don't last long term, ask me how I know. Ken at Everyday Performance is great to deal with, he did my non CCC Qjet. Can you posts pics of the exhaust, the head pipes where they go into the collectors specifically? I hope the paint job at least looks good and the car is rust free, wow the little stuff is brutal on that car. In the end, you will have a very nice ride.