Casper, 2wds do not have rear blocks, so lowering is not that easy, unfortunately.
As far as a good amp goes, I love Rockford Fosgate. I've used and abused a couple of their amps and love them to death. One got fried (not exactly my fault, for some reason a shop that worked on my truck messed with the ground). Sent it back to RF, they fixed it and shipped it back with a new spec sheet. And they are typically under-rated, I had a 200w RMS that was spec'd around 250w or so RMS and an 800w RMS that spec'd at 915w RMS. The big one is a two channel, I bridged it down and put a pair of RF 12" 4ohm subs in parallel... IIRC that puts it like 1 ohm to each sub and should be very abusive to the amp... but it didn't bother it a bit.
My small amp was jammed under a seat for the longest time, never had a problem with it overheating.
For subs, I'd say Alpine, RF, or Kicker Solo Baric (the square ones). Not sure if there's anything else real good out there, I've been out of the scene for a min.