dynomax ultraflows vs. race-magnums???
the race-magnums look like they are round and wouldn't have as much fiberglass, so are they louder than the ultraflows or are they the same???
and i am not talking about the dynomax bullets, just to clarify.... thanks...
'98 Yellow Cobra (sold and missed)
'98 Yellow Vortech Cobra (purchased 10/1/11) 410rwhp/365rwtq Injected Engineering tuned
'12 F150 xlt 4x4 (purchased 10/10/12)