i was lookin to get a jackson USA RR1 off the internet. on the jackson website and at zzounds.com, it says that the rr1 comes stock with seymour duncan jb's in the bridge and jazz neck position. however, my friend says that this isn't true because the rr1 that he bought from a local shop was loaded with an invader and a jazz. so my question is, does the rr1 come with the jb and jazz or an invader and jazz? and is the TB4 JB the same as the SH-4 JB, except it's modified to fit into a guitar w/ a tremelo?