Flowmaster Y300400 Scavenger Series Y Collector - 3.00 in. Primary / 4.00 in. Final<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Durable fully welded 16 gauge aluminized steel</li><li>Patented D-Port technology</li><li>Excellent for 2 into 1 exhaust system configuration</li><li>Race application for single exhaust system</li><li>Not for use on pollution controlled vehicles</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41OgtFmROSL.jpg" noproxy>