Try searching eBay for
"silicone turbo hose coupler"
it will come up with all sorts of hoses, straight and bent, that can be used to extend the exhaust, yes, they can withstand the heat,,
Many cost less than buying the same thing in steel,
The BIG benefit is that if you hit something, the silicone will bend like rubber, and flip right back to original shape,,
Many people have ordered a size that is a little tight,, then you do not even need a clamp,, :thumbsup:
If I were doing it, I would probably end the extension with one of the reducers that would bell out at the end,,
The tractor would look like a kids Cummins powered Dodge pickup,,, :laughing: