If I do go through with the aluminum one they will likely be where I go. In the meantime just found out exactly what the rad shop said about the one brought to them. They got leaks fixed but said its rather plugged up...not surprised since it ORIGINALLY had straight well water in it which over the years would have slowly evaporated and plugged it up...plus anything else left recently (within last year) that wouldn't leak out.
Going to pick up the oldie tomorrow and see about rodding it out this weekend.