Congratulation's .... You have "Discovered the "ONLY " way to get the kit's too short roof to fit .
Just wait till you try to get the Blower mounted, .... ( your gonna have to scratchbuild a new " Longer" pully for it.
Have you tried to fit the interior in it yet ? My kit was a scale foot thick on the driver's side ! Had to take the "Dremel" to it
I would share more of this kit's "Shortcoming's with you .... but the list would be a long one..
I got so "frustrated with mine, I put it back in the box ..... that was a year ago.......