Ok Matt, again, there'res this thing the Navy harps on all the time called "Attention to detail." You are asking questions on the WW&F Forum in the Sandy River RR Park catagory/topic about locomotives that are currently at the MNGRR in Portland!
Now, that being said, there IS a catagory for discussion of MNGRR activities.
If you take the time to look it over and read all the threads I'm sure you will be quite capable of answering your own questions.
However,
#7 is currently undergoing restoration to operation. The details of which are cataloged in the MNGRR topic on this forum as well as MNGRR's OWN forum and the MNGRR website under "News."
AFAIK, #8 is concidered a candidate for restoration in the future, but not until the work on #7 has been completed.
As for the passenger/freight car "fleet" at MNGRR, there is a long-term rebuild program underway that has been well thought out and executed; the results of which are also recorded and reported in the above mentioned locations.
Basically, all the answers to your questions are there, you need only do the "legwork" of reading the forums (preferably before you post your questions,) to learn the answers.
PATIENCE my young Jedi, PATIENCE!