So how bout 2-3k? That's my favorite sound on the roush ATM.
They are loud at startup, cold or hot. Get tin like at above 3k. The H is the more mellow GT sound or at least a sick *** v6.
The X is for performance, but its raspy like a nascar but on a v6. Über tin sounding
Any Speed over 55 mph may kill you... that's why i drive 60