what guage wire?

For 130 amps I would recommend at least a 6awg, and preferably a 4awg.

Remember there are a lot of things that effect how efficient your power transfer is. Length and quality of cable can reduce efficiency, as can the quality of the terminations.

Also, you want to size your cable so that you are only using 80% capacity to account for these issues. If you don't, you could be generating excess heat (resistance) and causing yourself an unwanted voltage drop.

I have a 140 amp Powermaster 1-wire alternator, and use 4awg to the positive buss, and then a 4awg to the starter and 1/0 to the battery in the trunk.