It's 3,400lbs and only available in automatic.

I've looked into them quite a bit, not a fan of the Z31 engine but obviously an unlimited amount of swaps is available. Haven't been able to figure out what suspension it has, possibly from the S13 240 since its about the same size but can't confirm

The added weight compared to say the S13 is in it's safety features, it has extra reinforcements inside the door and quarter panels making it one the safest vehicles produced in the early 90's but also way too heavy for a car of it's size...might not be too difficult to strip all that out though