How much is actually involved in a 3G upgrade

its pretty much a direct swap for 91-93's just replace the power wire with something bigger, at least I think

lol I've actually done this on a 2.3... It's super simple. replace the 2 power wire setup with a bigger 8 gauge or so single wire. the white wire (I believe. it is the remaining wire on the power harness) goes to the other retainer on the back of he alt. The remaining regulator plug fits as it should . As for the fitting. you have to grind the piss out of the bracket just set the alt into place and remove material as necesary. just remember to remove the alt before grinding . And that friends is really all there is to it. Just dont pull a stanggrrly (it was her car) and hook the alt power wire to the starter side of the solonoid LMAO. That made for some interesting starting issues. ha ha.

Anywho hope this helps.
Kevin

Easy.

http://forums.stangnet.com/showpost.php?p=2879079&postcount=69

I had to do some grinding on my 93. Other people didn't. Go figure.

not mine, but found this helpfull
http://www.turbotbird.com/techinfo/3G Alternator/G3 Alternator Install.htm

I didn't have to do any grinding...I couldn't even see what would need to be ground down. Mine slid right into place. My best guess is there are a few differen't styles of mounting tabs on those 3G's.

As stated, 2 big wires go to bolt on back, multi-wire plug is a direct swap, single wire left over goes to spade connector on alt.

Stinger