Hi, good to see you back on track!
Sent you a PM regarding the Paris/Dakar Honda.
About the NSX-question, this is what you have to play with if you want to build with engine detail, quite a few.
Niclas
Pictures borrowed from http://www.pumahobby.se/
Kit#24100
Kit#24126 (I think this one has an engine too?)
Kit#24193
Kit#24202
Kit#24204
Kit#24198