First of all; I have no clue why the 92-95 Civic DX is in ITA anyway. Who would race one against a CRX Si? It should have been moved into B many years ago. Currently there are tons of them out there going cheap. If they move it into B, then start shopping.
Last year at the Targa NF Rally, the CRX Si that I had rented out, blew the engine on day 4. A local guy offered his engine for a replacement so that they could finish the event on day 5. His car was a 95 Civic DX. We swapped the engines & gearbox in 8 hours on Friday night in a local parking lot. I must say, after that, that CRX's performance was a dog compaired to the original 1.6 Si engine.
And, yes the 96+ non-vtec should go there too. These cars are all getting heavier and should be in B.