If I were to sell my BDR it would be for a Kirkham all polished with a... (shame on me) LS9
second best choice under 60' would be a:
BMW M3 convertible
SLK 55 (the SL is too big)
Audi RS4 convertible
all
small great v8 fast cars with everyday potential
or maybe the
Jaguar XKR
Lotus