FOSGATE JOE
10+ year member
R.F team and 49er fan!!!!
ok i have 2 4inch pipes that will be 20inchs long so would i times the 4x20x3.14=?? and then divide by 1728 to get my cuft ?? //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif