After paying for the headunit, I have no money for speakers.

I took a bit of time researching the headunit I wanted. I will do the same with the speakers and amp. I think I want to get a 4 channel speaker to drive the fronts and sub. The rears I might just leave stock since they are for rear fill anyway. Or, if anything, they will be stock replacements (un-amped). For the sub, I will probably get the RF enclosure and put another sub in it. I can't take any room up in the cargo area.

As for the VSS, I'll let you know when I find out.