I did consider the same when there was a 45 conny in the local scrappy with the height and lumber on the passanger seat but it was crushed by the time I got back.
I then looked at transfering the parts from a spare drivers seat but it wasn't worth the effort. Rimmers did have the spares for fitting to a lefthand drive seat but again CBA.
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Former custodian of the legend that was FE54 - RIP