i like it.
atleast you prob have way more clean/rust free examples than i had to choose from.
mine has a little rust. but nothin too significant. and i got my 325is, with 134k, for $1700. i havnt really done shit to it yet, and it runs like a top. it just sounds like an angry sewing machine.
prob just needs a valve adjustment or something simple. the M20, 2.5's are smooth as silk, and very reliable.