there was a company out of australia making left handed copies for a while if I remember correctly, they went out of buisness after a couple years but there should be a handful out there of lefty enfields. Probably hard to find and convince someone to sell though
I too am a lefty, only a year ago i finally got a left handed rifle,,, a muzzle loader. all my No. 4's are right of course. you may wanna check if you haven't already which eye is dominant, I am right eye dominant, yea when they made me they just put left over parts together, shooting righ is clumsy but works and I am just as bad a shot no matter what side I shoot from.