i bought it from a shop and it says 1990 vtec on it, the rpm redline at 8000 and rev at 9000, but my 88 crx has different wiring, and the speedo meter is cable while that one is elictornic, i loved the 1990 one plz how can i trasform it inside my dashboard?!

 

You probably gotta use the 90-91 dash setup. Not sure on wiring but its be covered, search for it and I'm sure you'll find something.

 

if it is jdm u might need a VSS speed sensor there on ebay for like 40 bucks