1st gen alternator upgrade/ Big Three Upgrade

I'm looking to put a 270 amp DC Power alternator into my 1st gen, does anyone have any knowledge on the setup? anyone have pics?
I also want to do a big three upgrade on the truck and wanted to know where all the wire connections are... Would anyone have instructions on how to go through this process?

Post pics and instructions thanks!

 

Pray tell just why do you need such a High Output Alternator ??

Doing some serious upgrades to your electrical distribution system as well??

What size wiring do you plan on using for your upgrade ??

 

+ Alt to battery. ( it's on the drivers side. Back of alt
+ Battery to starter.( lower passenger side. Runs down from the battery and in front of engine)
- block to battery. ( drivers side. its below the oil filter, runs up to battery. )
- body to battery . ( drivers side finder)

 

I'd be running a decent stereo system, Light bar, Rock lights, and a power hungry winch. I'd have what i need plus a little.

 

Which alt???

 

Thank you so much!