Yup, can those 90-91 CRX cluster works, just simple plug and play for 91 civic dx with the 5 speed manual? (Im talkin about the 90-91 CRX si cluster that has factory tach in it).

Or do I have to get 90-91 civic si cluster to make it work?

Or they both USDM 90-91 CRX SI and USDM 90-91 Civic SI cluster are the same?

Thank you.

 

it will work for your 91 dx... 90-91 civic/crx si clusters are the same.

 

si