I check in on this thread every now and then and seems like much of the same discussion over and over, nothing wrong with long threads though.
I understand wanting to do the research and get it right the first time, I do my best to do the same. many times it works, sometimes not. At some point you still have to do something though, can't research it forever.
If you're still not so sure what'll work trying stuff is the next step. Junkyard parts can be real cheap, and if it works rebuild it if necessary/desirable or replace with new.
Grigg