I would strongly suggest looking at
www.madelectrical.com. If you have the time, talk to Mark Hamilton about what you want to acomplish. IMO, the best way to wire it is basically the way Bonzo mentioned. Definitely use 1/0 cable and make sure that you ground to a clean (bare) part of the frame and gob on some tune-up grease. The Ford solenoid is a must. It's too cheap not to use one. If you have a mini or permanent magnet starter, you'll need to wire a relay into it instead of using the little jumper plate that comes with most kits. Otherwise, your starter will keep spinning long after the engine has started. Also, if you use the Ford 'noid, you should try and run the wires inside the vehicle to prevent wear.
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'81 Sport Coupe 229 V6 -Junked
'93 Z28 LT1 - Parting out
"Is that a rat? No, it's just a really fat mouse."