question

what does it take to put a da integra cluster in my 1990 civic hatchback??

thanks and do you think it would be worth doing in your opion

While that write-up is great, there are a few things in it that aren't quite perfect methodology:

1. Don't use quick connects. Ever. Bad Juju.
2. The cluster will not fit into your dash, and the walkthrough doesn't outline how to modify the dash to make it fit.

Consequently, that could have been found with a quick google search... why would you use the internet to ask a question without first asking the internet?