Re: 700 sps varment
My cousin has the same rifle you have. He got a nice laminate from Stocky's. Being a lefty, you will find you have few options than us righties. For instance, another friend has RH sps varmint and he got the same stock as my cousin, but he could get one with the aluminum bedding block.
tim is right that the SPS and BDL action are the same. in terms of the barrel channel, you could potentially get a stock for a lighter barrel and simply open up the barrel channel by sanding it. Check with the manufacturer and make sure it's doable though.
I'm not gonna shoot here. I'm gonna shoot waaaaaaaay over there!