[Dieselwrencher]

I agree with what Jjorgensen52 said. On my 76 I did a step cut to help make it stronger. I used to work in a heavy truck frame shop and we used to straight cut them up to a certain length. All the ones we did got sleeved with minimum of 1/4" cold rolled. On super long rigs, we angle cut them. None of them ever got fish plates either. They never had any come back and they had been doing truck stretching/shortening and frame altering since 1979. We had a dump truck come in that they built in the mid 90's that had been rolled. The frame was straight where they stretched it and didn't start to be roled and twisted until after the sleeve ended. We saw all kinds of mangled trucks, and fixed 98% of them.