Do these bolt straight to factory mounting points?

Yes. These mount at the factory headlight locations with no drilling or fabrication needed. You're working with OEM bolt holes.

Which lens finish should I pick?

Black gives you a blacked-out look, Clear is closer to stock brightness, and Smoke splits the difference. Your choice depends on how dark you want the light signature and how much light transmission matters for your use.

Do I need to do any prep before installation?

Test-fit before final assembly to confirm alignment with your bumper and fender gap. Once you're happy with fit, proceed with bolting them in place using factory hardware locations.