I went with the BUBs.....at idle they are very deep and have a bit of volume to them and you can make them bark. They DO NOT GET TOO LOUD a higher rpms. I really like them. The fit and finish are NO WAY as nice as the Thunders but they are a very good buy at 419. off the line and at idle it's running sweet with a 130 main jet and 1 shim on needle. Frank turned out the fuel mixture screws a 3 and it seems fine....I've on gotten one pop so far and I'll watch it.
I'm gonna take a spin on the highway to make sure we are good on the upper end but so far they are fantastic!!!!!
Thank you Frank for your help!!
07' SM
