A lot of people don't bother advertising their second hand performance car parts on EBay, Trading Post or Gumtree.
Other than
my105.com are there other good local sites for engines, transmissions, racing parts, and all other cool bits we drool over when planning the next modifications?
Dragster and BoostCruising used to have heaps of second hand bargains, but one site has disappeared and the other became overrun by the 4cyl guys.