I agree ScarCrow. People always say, get a G20 if you want 4 doors and an SR20, and they're right in some sense. You have a nicer interior, better brakes (that can also be upgraded to an Altima setup very easily), you do loose the LSD though. However, I'm not a big fan of the P10's looks. I think the ideal 4 door would be a '94 GXE with a DET swap. Upgrade the brakes to a BABK 4 wheel disc, and a nice suspension setup. That'd be a nice sleeper. I've never even seen a B13 GXE. All you see is B14 and B15 GXE's. That would be my choice for a 4 door sleeper. Nice paintjob, some clean rims, probably 15's at largest. Maybe a sunny front end or some Tsuru headlights. I'm not normally a big fan of light mods but if you want a sharp sleeper with some nice subtle mods, they're out there if you're willing to spend the $$$. Dart's had that slant six in them and you could damn near pour sand in the crankcase and they'd still run strong from waht I understand. Those were indeed, underestimated cars when they were new.