what all is needed to do this and how hard is it really? installing it on a 93 prelude si.. also wondering what total cost should be on a project like this

 

easiest way is to buy a whole 94-96 dash, then its just a direct drop in.

and i don't know how "hard" it really is but seeing many threads on this. so you should have no questions after a quick search.

cost is free(if you found a dash) - total cost of a wrecked prelude.

 

Look for a EL guage cluste complete with invertor and harness, then it is just plug and play!

If you can't find one with the harness, at least get the Cluster and invertor and use this link!

https://honda-tech.com/zerothread?id=1528977