"For the OP, just buy a LH receiver and screw your barrel on".

I'am right handed but wanted to try shooting a lefty action, from the bench, right handed.
Picked up a Model 12 lefty repeater action from Northland, found an ambi stock and put the two together. Loved the feel enough that I picked up a right hand BR style thumbhole stock, recut the bolt cut to the left side and plugged the right cut.
Love it!! Only problem now it, not liking working the right bolt on my other rigs and taking my hand off.
You shouldn't have any problem selling your right hand action.