RMK tunnel cooler cross over piece

[Sundance Kid]

Does anyone know where to source the tunnel cooler rear cross over piece?
I'm looking at a 163 and want to chop the rear of the tunnel off so I can put a 146" track/skid under it and not have the extra foot of tunnel sticking out.
Someone on here showed their pics of doing the same thing and I can't get a reply out of him where he got the new cross over piece.
Here's the pic of the piece I'm looking for.

 

[wjl]

SDiddy reused the stock one to my knowledge.
Looking at the pictures the fabricator/welder salvaged the crossover. Cleaned it up and reused it.
Track is a 146 camo extreme in the 2.5" lug 2.86 pitch, my guess. Trackusa.com

 

[Sundance Kid]

Well that's a pretty handy fabricator/welder. I've had to do that before, sometimes it works, sometimes it doesn't.
I'd just like to be prepared if everything turns to $h!t.

 

[LoudHandle]

Anything close will work if you can't salvage the original. Aircraft spruce or Shapiro supply will have small light thin extruded tubes that will work. Or your local metal supply will have 3/4" or 1" schedule 40 aluminum pipe, which is overkill but will be functional. You could also cut the coolers at a 45 and use the tail to connect the two. U cooler style, plenty of options. No need to panic.