Yes, removing the front fiberglass body section does involve removing the windshield since it is bonded into that section. The windshield comes off attached to the body. It basically consists of removing lots of 1/4-20 screws from inserts in the chassis tubes. The wiring may be easy or difficult, depending on how the original builder did it. MANTA 2 was wired with connectors so it was an easy job.

Another approach might be to just unbolt the front body and tip it up far enough to gain better access to the front suspension without disconnecting the wiring. You might need to unbolt the nose/radiator support to do that-- 4 more bolts.