Port calculators

why Silver Member Username: Smoke05 Tucson, Arizona U.S. Post Number: 363 Registered: Jan-07	Posted on Tuesday, April 17, 2007 - 03:29 GMT any other calculators online other thant the12volt.com?
Justin Ogle Gold Member Username: Oglejust Post Number: 1428 Registered: Aug-06	Posted on Tuesday, April 17, 2007 - 03:36 GMT http://www.carstereo.com/help2/Articles.cfm?id=31
why Silver Member Username: Smoke05 Tucson, Arizona U.S. Post Number: 364 Registered: Jan-07	Posted on Tuesday, April 17, 2007 - 04:22 GMT anyone else? i want to try at least 3 differnt ones, didnt BUMP BTW
why Silver Member Username: Smoke05 Tucson, Arizona U.S. Post Number: 375 Registered: Jan-07	Posted on Tuesday, April 17, 2007 - 08:58 GMT bump for the night