Spider web Wiring

So I’m a new member to this forum and I just got a 1978 280z not too long ago and the wiring is absolute trash, all diy, fuses everywhere, random wires not even attached to anything, you can imagine. I don’t even know if everything is working properly because I can’t figure it out. I wanted to re-do it all myself and buy a wiring harness online. Only thing is I also wanted to shave the engine bay the most as possible so I wasn’t sure on buying a universal kit. I saw a few people on here got the ez wiring kit as it’s cheap and easy but again wasn’t sure as I saw it’s a universal kit. Would there be either a 280z kit or a universal kit that fits well for relatively cheap? (Under ~$400 preferably)
Thanks