https://forums.forza.net/t/porsche-911-carrera-rs-rsr-1973-1974/560861
merge the 930(the turbo is based off the g series but the codename is different and most 911 G series werent even 930s Even the english wikipedia states the 911 Turbo aka 930 in the original 911s page so its a facelifted 1st gen 911) one should be renamed to G series which is actually a facelifted version of the original 911 it was Porsche response to the NHTSA that
made new regulations to the cars in which manufactures had to install the 5mph bumpers(8kmh) also in 1989 they built a speedster version of the G series 911