Found a 1966 Pontiac Catalina convertible with 389 Tri-power - Whats it Worth ???

[Green Machine]

Saw a 1966 Pontiac Catalina 2 door convertible with 389 Tri-power while driving around today. Body is straight with fairly new good quality paint, not an excellent paint job, but very nice, sorry don't have any pics, it is a gray color with black original interior, one small rip in dirivers seat. No obvious rust repair done, nice white top, has A/C, auto Turbo 400, with 90,000 original miles, nice chrome, pretty darn decent overall. Wondering what that might be worth before I call. I know a 66 Chevy Impala convertible would bring pretty good bucks, but are these as sought after ? The Tri-power setup is worth some extra I would guess, If you have some idea of it's value, please post back - Thanks.