You can pickup a 240SX (either S13/S14) for under 6K and if you still have room...you can throw in a SR20DET which will pretty much always have less than 50K miles. If those are out of your reach...you got the Datsun 510's or the 240Z's...if not those...perhaps a 300ZX (Z31's).
Dont leave the Force and go the the Dark Side (Honda).