i know they say the undercarriages of the 3 are different. so my ? is does anyone have pics of the vert and hardtop that show the difference? im just wondering what can be so different that SFC's arent interchangable

 

The convertible has a brace to try to stiffen the chassis since it does not have the roof structure. I think there are pics on BMR and Global Wests' sites.

 

you can easily see a straight brace running down the side of your vert that almost looks like a subframe connector built in

hardtops and t-tops dont have that and are still stronger