we were a bit sus if the d-max gear that empire euro were legit, cos they look like they've been pulled from the mould a few too many times (like the edges of the guards weren't quite 90 degrees to the rest of the panel)... but they assure us that they are originals... and also they're not as wavy as the viva stuff... either way is still needed a high fill, sand and stuff to get it looking mint. couldn't comment on what racespec sells, never seen or used em.
I got the BN kit from BN Sports in japan, cost a fortune to bring over. Sold it below cost cos I never got around to fitting it (just wasn't a reasonable kit for a road going car). In the meantime we comissioned a company to copy my kit... we fitted a couple... but at the same time and they sold copies to other companies without us knowing... so there's a few getting around now.