Don't underestimate the old Morris.

40 years ago I had a 1961 Austin Lancer fitted with a full race MGB motor. Apart from being able to pull 160 k's in 3rd (4 speed gearbox) I once towed a Holden panel van across Canberra including going up a few big hills. The panel van driver kept putting the brakes on because I was going so fast up the hills. OK, not the same as towing a truck but back then life was much simpler and you could get away with almost anything including using your MK1 Golf to tow a fully loaded car trailer.

I'd never do it now but back then I was young and stupid.

Cheers

Paul