330 (non cab's) can run low 14's. I ran 14.7 with my bro's, with a slipping clutch (couldnt launch more then 1500 rpm or else the car doesnt move and just rev's in its place) and my 60' time was 2.3 . which sucks lol.
Besides, vic, your car is automatic
tranny swap first, then reduce the weight of your convertable by say 400-500lbs THEN S/C . otherwise, not worth it.
edit: an auto 325 vert running at a reliable 8psi should keep up with a 330 (non vert) and even take it, but certainly not eat it alive!