New England Shotgun

Question
I have been wanting to turn my New England single shoot 20 gauge into a rifle. Where can i find good looking stocks and barrels that will fit it? How big of a rifle can I make it? Thank you for reading my question.

Answer
I would need to know the exact make and model number of your shotgun to be sure, but if it was made by H&R then you can find all the details here:

http://www.hr1871.com/Support/accessoryProgram.aspx

If this doesn't help then I can't help you since I am not an expert on shotgun conversions.  You can always try searching for your specific model number and the markings on the barrel by using google.com

Good luck!