Quick question regarding coil springs

[GTFTW]

Here's the deal, I recently purchased some lowering springs from a friend of mine. I have a coupe and so does he. However, he neglected to tell me that the springs were meant for a convertible, not a coupe

They're eibach sportlines but for convertible mustangs.

What kind of drop would I expect if I used these on my coupe?

Thanks in advance.

 

[Rejekt]

I know the convertibles are heavier so the drop would be less... unless you leave out your isolators? That would make up the difference.

I believe only the rear springs are different though.

If you're worried then sell or offer a trade for coupe springs