Ever plan on going around a corner? or accelerating with bravado?Is there really a reason to put subframe connectors on a coupe?
My 98' coupe is WAY more rigid than my 95' vert was.
My coupe doesn't even have a strut tower brace or k-member brace like my vert did. A lot of people claim the strut-tower brace doesn't do anything, but I'm sure it takes a LOT of stress off of the struts/towers in high speed turns.
I learned I REALLY needed SFC's when at autocross one event had two skidpads in one course (big O shaped corners where you go around the full circle). The skidpad was so hard on my mustang, chassis flexing, one front wheel skipping around while the other one stayed relatively planted, the ungodly understeer.... SFC's are absolutely worth the money.
Also when my car got 4.10's I lost all ability to launch energetically without roasting the tires and wasting the power, another sign the chassis wasn't doing it's job.
Coupes are stiffer, but they absolutely still need the help.