Wiper motor was off a 2001, IIRC 99-2003 neon are same. I cut both arms in two and welded old arm to new arm, then built a mount on inside of firewall mimicking the stock angle for the motor. I can get you a pic if you want tonight.
I have a similar setup in my pro street demon but I'm using a wiper motor from a late 90's early 2000's dodge ram 1500. It's small but powerful and I only had to take about 1/4" out of one of the linkages. It works great.
