As a glass tech, I believe you want to leave the gasket on the body, then install the chrome afterword, that’s how it appears to work not having the chance to have done one yet myself.
So the windshield number you need is part number FW00282. that is the NAGS code for the b210 *hatchback the sedan is FW00281. I've checked the warehouses nation wide for my company, and its non existent here. you can check companies like Pilkington classics or mygrant auto glass for it, but in the current position I'm in, I can not.
Edit: see asterisk
oh hell naw. not even close. http://community.ratsun.net/topic/32275-ka24de-210/page-9 this is one of the threads I was reading about a rear end swap, which doesn't have as much fab info as some, but gives you an idea of what goes into a swap like this.
there's a guy on here that's doing an s13 rear end, with a KA swap i think, which would also give you IRS. So if you can find a 240sx, you may not even have to bother with trying to find the h190.