It's pretty easy. Took me about 3 hours to replace the radio, run wiring for the amp and hook up the subs. (1st time in the Teg but not the first time ever) Just take your time and be careful. Be sure to get the wiring harness and dash kit.

This site has some useful Integra specific info too.

http://integra.cyberglobe.net/caraudio/diagrams/