Are flowmaster 50 series delta flow mufflers a good chose?

I have a 09 g8 gt and just looking for a little sound for it. Nothing loud.|||If your looking for good sound but not too loud i would go with flowmaster 40 series delta flows they have a very good outside sound while still maintaining the comfortable interior quietness!!!|||50 series would be quieter over the 40 series. You can try youtube and do a search for 09 g8 flowmaster mufflers and hear some. We pretty much sell 40 series on all our custom exhaust work. If you want it to sound like the old Mustang Gt's (which sounded good), I'd go with 40 series Flows. If you think that is too loud, I'd look into Magnaflow as they are a little louder than stock but not as loud as flows.