Insurance question (low audi-content)

[SOP8920@Siena.edu]

Hey all,
    A friend of mine is currently in a bind. He has recently purchased a
Mustang Convertable, and is seeking the lowest insurance premiums. His old
insurance (for his last car) was asking for $4000 to cover it/year. He went to
another guy and found $3000/yr. Apparently, these vehicles are insane to
insure. I know that my old man is paying about $6000/yr to insure 7 cars.
That includes both Audis and two Sports cars (Miata and Mr2). Also, my kid
brother (of notorious "let's roll the MPV" fame) is a high risk driver.
I'm going to talk to him about where he has his insurance done, but I was
wondering if anybody on the list had any suggestions as to where to go for low
cost insurance.?
Thanks. 
                               -Osman Parvez
                                89 200q
                                Siena College
                                Albany NY

P.s. sorry 'bout the low Audi content again...