I could be wrong but I believe the Robnell Cobras were registered with live side pipes on both sides.
The pipes were well heat shielded and exhaust turn outs pointed to the ground.
Cheers,
Bryan
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COB-66 Young at heart old fart.
Don't drive faster than your guardian angel can fly.
If it doesn't matter what gear your in you have enough torque.
VK3KDN