Has anybody mentioned the E30 chassis BMW 325is?

170hp, 170ft. lbs., healthy redline, bulletproof engine, great weight distribution, lots of aftermarket support, clutch type limited slip differential, stock 0-60 and quarter mile of 7.5 and 15.5, respectively, and a hell of a lot more solid car in general than a 240sx. You can find them all day in your price range.

And despite the stigma around BMW, the old ones are NOT expensive to maintain, especially when we have a BMW-only salvage yard like Strictly German so close at hand. Just a thought!

There's always the NASA Spec E30 series too.