Are they similair? Yes and no. The 767-400 is NOT similair to the rest. It has a 777 cockpit. The other 767's have similair instruments setups with the 757's. The systems are different, but you learn the flow differences. I did my training in a 767-300 simulator and now I fly the 757-200, 757-300, 767-200, and 767-400. Weird, but true. Can you say "on the job training"? A boeing is a boeing, so my 737 experience helped.