1.Get the strut brace/shock brace,

2.get the brace for the bottom of engine(both are on ebay).

3.Get you some HR rated tires,stiff, not like your current tires-soft.
.
You have a convertible, with the metal missing above your head tha't found on a coupe(non convertible, all metal roof),so it will not drive like a coupe..

 

Re: the urethane bushings - I'm not a fan but I'm not against using them. I was referring to more race-related items. Just be aware that urethane bushings come with certain service and ride issues.