[Tim Brewer]

Paul,
I don't think the way a Lonestar chassis is made leaves enough room for an under car exaust. But depending on the year of your car and type, they have a few different chassis designs. The sidepipes that came from Lonestar will blow out the packing in about 500 miles and yes , your ears will ring all night long. Contact Boffin Motorsports for their sidepipes or anybody else for that matter for quieter sidepipes.
Tim