You can always make it fit, if you know welding.Add to frame, or alter.
Probably fit closer in accord than civic.
Main element here would be alignment with transmission.
Was the prelude rear wheel drive and accord/civic front wheel drive? then you have an issue.
no time to do your search for you. have fun.
Thought you wanted reverse, prelude into other, you can find a prelude, have patience keep looking. You should be able to buy a preowned prelude car, rebuild the engine if you want and use the better chassis. a 91, won't be that much money now.
Do a search on ebay for the car and the motor, set search for email notifications whenever someone posts one.