1985 617 differences

[bricktron]

hi all, i have a line on a nice 617 which is the later, i suspect california, model with the trap oxidizer and higher-up turbocharger. my mechanic, who is the seller, told me it's missing the air filter -> turbocharger pipe as well as the turbo's oil inlet tube. i'm sure those are possible to get, and i know about the hoods with heat shields. compared to any other 617, though, what else do i need to know? should i block off the trap oxidizer or what?