Q: Can dual exhausts both exit on left side?

I need your advice about adding dual exhausts on my van. There is an obstacle in my plan because the gas tank is off-center and is behind the axle. This means that both exhaust pipes would have to exit on the left side of the van. The muffler that I now have on the van is a single high-flow with the exhaust exiting straight back. I do not want it to exit in front of the tires because that would affect the nice shiny rims. I won't be able to afford the side pipes. The running boards have been removed because they were damaged. What is your advice and what do you recommend for my dual exhaust plan?