The 130A alt works AWESOME. It is really a necessary upgrade once you get underdrive pulleys (or if you have a big stereo or an electric fan). I got mine at Pep Boys (for about $150), just tell them it is for a 94 GT, and they will give you the 130A alt (you should be able to return the stock core without them noticing the difference :-). You will need to splice in a new connector, and add a 4AWG power wire (I bought the 4AWG wire seperate from
www.pa-performance.com - they sell the alt, and entire kits too) it was $60 but it is very high quality, and fits perfect. There are some lengthy articles on the install procedure on the corral(dot)net website (like needing to Dremel part of the exisitng bracket to get it to fit)... Let me know if you have any specificic questions. BOB