Seriously, a four door car that's 'sporty'?
I wouldn't think there would be many FDSC's out there with a manual trans, by the time you get to four doors, it's no longer a 'sporty' car, it's family transportation, and they come with ATs.
Sounds to me like your priorities are a little skewed; you have a sports car, now get something to haul the family in. Who cares if it's 'sporty', if your requirements are under 20k and four doors, your pool is limited.
TBH, a G35 or G37 matches your 'criteria', but they are hard to find with MT. To get under the $20k, you are probably looking at a 2010 or earlier G.
