https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
These were the 5100's I ordered, not installed yet. Having OME coils and new top hats being put together at local shop right now.
As for the skid plate, I don't know but I'm interested in the answer!
Basic tools should be fine even if you don't have spring compressor. There are videos on YouTube where they use the floor jack and keep the coilover installed to compress the spring and then re-install. Personally, I think it would be faster to have local guy with the right tools throw them together for me and then I can install.