exhaust routing... outside frame or before tire?

[jks67ss396]

Guys

Im putting a larger tank in the back of my 71 lwb fleetside and the exhaust is too close. Right now, each side exits behind the tires sorta stock like. I am thinking of routing the pipes either on the outside of the frame and between the frame and tire and then out at the current spot OR out in front of the rear tires.

Ive read about people complaining about noise, but id do some real quiet mufflers.

Any thoughts? pics would be great too

thanks
jeff