I have seen scr's below 200 and then I have seen scr-sp's above the 200 mark. The sp's that I have seen have the big bore shocks on them and everything else is gun metal/brown looking in color. It all depends on what extras come with them.
For parts compatibility, you can go from scr to sc but I wouldn't take parts off of a sc and put them on a scr since they use different thread pitch/type of screws.