Chris,
looking good...seems like your fixing the right way, great job. Ever consider moving the wiper to the inside of the firewall ? It's a pretty simple task and I'm sure it's within your skill level buy the quality of the work so far.
Thanks Ross
You know I hadn't really thought about it much. Did I see in your build or maybe somewhere else that a minivan wiper motor will work? do you have any mock-up pics?