www.edmunds.com look in the used car specific car specs section when researching a used car. They got some good stuff. An no dawg. There was never a v6 in ANY 240sx. All the way from 89-93old style to the 94-98newer style. They all came with the 4 banger. Older style had the 145hp Single overhead cam engine (SOHC) and the newer one updated it's HP and came with a dual overhead cam motor (DOHC). But both are the same engine. the "KA24DE" the 24 in that engine model number is how many liters it is. Same goes for almost all other imports. B16a =1.6, B18b=1.8 H22=2.2 Ka24de=2.4
Only in the U.S. did we get the KA24DE motor. The UK and Japan got the kool shit, like always and got the stock turboed "Silvia" (what a 240sx is called in over there) SR20DET motor. Knowtice the "T" part on the end of the DE? It stands for Turbo. haha
There are 2 different style for each model year series. There is a hatchback and a coupe version. The older 89-93 coupes have a real trunk. The hatchbacks have a full hatch lid that lifts up and different tail lights from the coupe model. 94-98 style the only real difference between the 2 is the front headlights.
One thing about these cars is the timing belt. Find out how many miles are on the car and if the timing belt was changed. If it was. Was it done right? An when i mean right, I mean did they replace the belt tensioner, and some other shit? or was it a fucking Amaco job and did they not do it. If it was done at the dealership, then you got no worries. They will always do it right. The timing belt is kinda a bitch to change when it's mileage hits (around 70,000) cause you have to take off a lot of stuff to get to it. But if your the kinda fix it yourself it'd don't matter to me kinda guy. Then get a owners manual, and probably a helms manual and go at it. Any more help or info just IM me. I'm a busy dood but if i'm not at the time, i'd be more than happy to help educate you on some 240sx stuff.
AOL IMer SN is "BlueEnyaMix"