Well you can dig all of them up underground after a while of digging, and theres a couple in Mt. coronet, I hope this helped!
huntington beach ca is at latitude 33.7075. average circumfrence is 40,041.5km so approx distance is 33.7075/360 * 40,041.5 = 3749km = 2330 miles
No Limit Engineering in San Bernardino, California Had made some out of aluminum, for classic trucks. Maybe they will do what you need. nolimit.net