I had to fix my friends exhaust pipe last sunday.
Couldn't get suitable parts from a store.
So, i used diy methods.
Hammered ends of two pipes to cone shape.
Adjusted widht of the cones suitable for the connector ( two Piece "French" Manifold Clamp ) with suitable lenght piece of pipe. ( 10 mm long )
Welds are made with stick. Little tricky task with rusted pipe, but can be done.
And here is the sound of the fixed pipe.
Backround noise of the yard is nearly louder.
Working fix, If you have to do it without pre manufactured parts.