Does this work as a standalone front lip or do I need the full widebody kit?

This lip is engineered as part of the complete widebody package and requires the entire kit for proper panel gaps and fitment. Installing it alone will result in misalignment with your OEM bumper and fenders.

Will FRP flex or crack if I scrape a driveway or speed bump?

FRP is a rigid panel construction, not flexible. It will handle normal driving conditions well. Approach steep driveways and speed bumps with the same caution you would with any aggressive front-end setup — the lip extends beyond stock, so ground clearance is reduced.

What prep and finish should I use before painting?

Sand and prep the primed surface with standard automotive-grade preparation before applying your chosen paint or powder coat. A clear coat is recommended to protect against UV and road wear. Your local body shop can advise on primer compatibility with your paint system.