Rear Tunnel Width of 2010 MTX 153"

[ralger]

Can someone with a 2010 MTX 153" tell me how wide the rear of the tunnel is? I have a '08 shorty extended to 136" and looking for a longer bumper. Not worried about mounting holes; just if the width would work.

Thanks

 

[Nikolai]

The outside width of a stock Nytro tunnel is 16 5/8".