i wanna kno if i bought a cluster from a old 88-89 civic 4 door dx that has a tach will it fit with no mods at all juss pnp into a 88 hatch? and how many wires i need to change if i were to get a 91 si cluster and put it in a 88 hatch?

 

Look at the cluster hood...if its the same then it'll fit. You can also transfer the cluster hood from the donor car along with the mounting bracket and it'll work just the same. Same year cluster should be plug and play (wiring).