How can I fill this gap?

[CrafterRBLXGo (Golden)]

Hello, I’m making a car and i want to fill that gap right there, however I have no clue how to do it.
Any Ideas?

[Crazedbrick1]

I’m confused on what you’re asking for. Can you remove the selection box and maybe reword your post?

[Orbular3]

Use this plugin to fill gaps: https://create.roblox.com/marketplace/asset/165687726/Stravant-GapFill-Extrude