It can be done...The 114.5mm-spaced wheels are from the 96 spec JDM ITR as you probably know, and the conversion from your 4 x 100 to 4 x 114.5 is almost exactly like doing the 4 x 100 to 5 x 114.5 found on the later ITRs. You can buy the suspension parts you need from
www.passwordJDM.com for $499, and instructions for doing the installation can be adapted from
www.G2IC.com on the forums. Some machining will be required, but everything you need to know can be found with a little searching. There is also a thread about the 5-lug conversion on
www.honda-tech.com specifically for the EF civic/CRX. Like I said, this is almost exactly the same as the wider 4-lug conversion. When you're finished, the side effect will be astounding braking (this is why most people do the conversion in the FIRST place). Maybe some pictures of EFs w/ 5 lug would help motivate you?
Here's the link to the Honda-Tech thread I mentioned. You may have to register to see it, but like most forums, it's free.
Additional parts you may need: Integra master cylinder and brake booster, Integra proportioning valve, ITR LCAs.
If you do decide to go through the work of this conversion, document it well and make an article please. I'm sure it would be well recieved by the people who said it isn't possible.
-Joe