Well i went to the local exhust place today and the said $620 for true duals, 2 high flow cats all the pipe and hangers 2 3" chrome tips, and 2 glass packs. My question is should i go with the glass packs?? or should i go with magniflow? thats what they carry there i believe. Is the price much diffrent?? and what about sound?? And does $620 sound like a good price for true duals?? Thanks brad.