Fred (SSS) has changed right handed guns to left handed, it can be done in reverse. There is much more to changing it over than just parts.

Fist you would need to cut a slot in the back of the tang for the bolt to clear, and fully close. Then you would need to fill the slot on the other side of the tang that is no longer used. You would also need to fill the bolt slot in the stock, and cut a new one on the other side. If it is a newer gun where it has the relieved bold body, it can be used either right handed or left handed. If it is an an older gun without the bolt recess you would need a new bolt body. You would need a new bolt handle and bolt head. Then there is the problem with the loading port as mentioned above. All in all this is major work and not something you can do in an average workshop. You would have the added expense of having the work done. With all the tons or right handed actions out there, I would say you would be money ahead to just trade or sell your action and get another one. I am sure there is a ton of left handed people that have right handed actions that would gladly trade you .