[Overlimit]

Here are some that I've found. For the nuts (and locks), just make sure you're selecting the right size (M14x1.25 or M14x1.5) which would depend on which stud you go for. For a track focused vehicle you want stainless steel. There isn't a clear consensus on whether to use Blue Loctite or not, and when to use anti-seize on titanium nuts/locks.

Studs:

• MRG Titanium Stud Conversion (Allows you to use M14x1.5 Nuts)
• Motorsports Hardware Stud Conversion (Allows you to use M14x1.5 Nuts)
• Raceseng Titanium Stud Conversion (Requires M14x1.25 Nuts)
• MSI Bullet Nose Stud Conversion (Requires M14x1.25 Nuts)

Locking Nuts:

• Project Kics
• Monster Lug Nut Locks + Nuts
• Gorilla Lock Nuts
• HonesTi Lock Nuts
• Raceseng Nuts (M14x1.25) / (M14x1.5)