id stay away from the l7's. i used to run 4 of them in the back of my TB and every couple of months one would blow so i sold them off. alpine type r components are decent, the tweeters are kind of harsh and need to be turned down some from my experience. their pdx line amps are one of the best out there for for sq/power/value, although people will say its overpriced, they have much better sq specs than anything people on here will recommend. stay away from the lower level alpine. idmax subs are a good choice, any decent underground sub will hit hard for a good price and out perform the kicker subs. you need to give a price range for your investment for any real help though, especially on an amp. for the price of an L7 you can get a nice dc or ssa sub