if they're the same price, 1g awd dsm without a doubt

z31's are slow, heavy, relatively unresponsive to mods, handle like boats, and just all around a pain... also on the sohc motor its really hard to get past 350whp without sinking a LOT of $

the dsm on the other hand is lighter, will definitely handle better without a doubt... waaay more responsive to mods, giant aftermarket, just more fun to drive, and if something breaks you have one of the biggest enthusiast communities to help you out... As it says in their slogan "DSM's- turning regular people into mechanics daily"

but they aren't as unreliable as the their rep gives them. And their heads flow exponentially better than the sohc vg z31 crap head.

Minimal mods: exhaust(400$), fuel injectors(200), fuel pump(100), safc(200) + big 16g(300-500), fmic kit (200-ebay), and etc (200) you're in the neighborhood of 350awhp