Whats the highest amperage I can go without damaging anything. I can either get a 105 or a 130. The 130 says it has a snowplow package..I dont know if that has anything to do with it. I have a system and I am going to buy a Capacitor and a new alternator because if I let my truck sit for like 20 hours, It wont start.

The 145 Amp requires a longer belt but will slide right in. Company in Dallas makes documented 200 Amp units but they cost a pretty penny also. Look for them on ebay.