I haven't done one but I am think about it for my 95 Neon, if the auto dies we will probably get another car and then I'll have the time to do a swap.
Maybe the Neon is unique but there are quite a few parts that need to be swapped and the most cost effective way is to buy a manual Neon with a wrecked engine. Maybe having a thread with links to model specific sites would be better as there is more experience there. ie,
www.neons.org
Dremd,
In the Neon world its the auto that can be built to handle more hp than the manual. Something like 300-350hp is needed to make the auto faster than the manual in the quarter mile.
Ian