Did a search and didn't get the answers i was looking for.
Plan on running true duals/xpipe. 3inch in/out.

Available options were the 12 inch oval, 16 inch oval, and 15 inch round.
What would be the best choice for my application. (Looking for best tone, least amount of rasp, have plans of a 111-112lsa cam in the future). I will being putting these on with Pacesetter LT's.

Thanks
Calvin

 

I run the 16 inch oval for the same reasons you want. The 12 inch oval mufflers will be louder but still have a great sound to them with little to NO rasp.

 

I have the 12" oval XR-1s on mine. If you want to see them click on my webpage and i have a picture of them with the car on the lift after i had the exhaust welded up.

 

I say the 12'' ovals

 

street stalker do you have any sound clips. Your setup would work great for a tunnel brace mount TA but I would like to hear what they sound like with the H Pipe, and maybe a pic from the back?