hows the h660 going spook? for limited space installs , there are a few options. I reccomend the doing the following. goto JB(or car audio shop) with your fav cd , (NOT IPOD) , listen to every set of 5x7s or 6" they have on the wall , let you ear be your guide. decide if u want intergration or a seprate HU for intergartion. Cheap audiocontrol lc6i medium pxe- h660 money no object audison bit1 aftermarket any good (not cheap as) HU that has the features u want audiopro make a tissuebox mounting kit ok so now we have full range speakers and sound input next is amps amps. cheap , jaycar 5 ch will do a good job and be compact best would be a 4ch and a monoblock for the sub sub. again listed to the subs on the wall with the speakers you selected , got for a 12 inch for the following reason. there are a company that does fibreglass sub boxes for the falcons. choice of mounting (all taking up little space) lhs or rhs side of the boot ( I run these) in the floor of the boot (raises the level of the sunken floor up a bit (need to protect sub if chucking stuff over it.) agaist the back wall in single or duel sub these can be removealble easly if the space is needed if u get one of these I recommend chucking some more f/glass inside to stiffen it a bit more so that should get you moving to make it cheaper , do it yourself its not hard at all , and we are here to help I run the audiocontrol dql 8 sound processor fusion 6.5 splits up front with tweeters in stock locations rear are 5x7s also fusion twin 12" powerplants 2x 2ch fusion amp 1x 3000w mono factory icc with dvd kit