owenby2000GT

Hey guys I just bought a 2004 Saleen S281E yesterday and she is in need of a lot of tlc. My questions are
1.) What weight oil should I go with? The cap says 5w-20 but I'm sure Saleen recommends otherwise.
2.) What brand/gap spark plugs should I go with?
3.) What would cause a real bad skip at lower RPM's?

cominus

1. I use mobil 1 10w-30, its preference really with the exception of some.
2. Motocraft, not sure the gap but should be under the hood.
3. A number of things, plugs, coil pack, etc.