Stop in for a cup of coffee

dukeboy_318 said

Yep and they copied that from the V6 in the 3S diamond star platform

Click to expand...

It goes back even further. The first patent issued for a variable length intake manifold was published in 1958, US Patent US2835235 by Diamler Benz AG.

Patent US2835235 - Intake manifold for internal combustion engines