I was kinda in the same boat and got a stock and forend form Numrich's and thought the prices were pretty good. I was happy with the stock and forend that I received. They do not have sets so you have to take a chance that the wood will match or be close, Mine did if it helps.

https://www.gunpartscorp.com/gun-manufacturer/remington/shotguns-rem/1100/stocks-rem-1100


https://www.gunpartscorp.com/gun-manufacturer/remington/shotguns-rem/1100/forends-rem-1100