The GM website is wrong, the E-rods are approved and legal for 1995 and older cars, check out the CARB number for E-rods on the State of California. AIR RESOURCES BOARD site.
http://arb.ca.gov/msprog/aftermkt/devices/eo/D-126-30.pdf
Erods do not come with pressusized gas tank systems so they are ok to use with old style gas tanks in old cars. Can't delete a part the engine did not come with in the first place! One of the rules governing engine swaps is you can't delete any part of the donor engine's emission control systems. A junkyard OBD2 engine originally comes with a pressuized gas tank system and it must be retofitted into the old car for a legal swap, you can't delete them because they are original parts of the donor engine.
There is a story making the rounds on auto forums from LS1.com about a guy in CA who did a complete LS1 swap into a 70s F body. He swapped over the dash, OBD2 aldl port, all the emissions gear, everything but the gas tank and tank pressuse sensor. The CA techs failed his swap over the non pressusized gas tank and sensor delete as it defeats the self diagnostics features of the OBD2 enhanced evap systems. To make the swap legal he had to swap in the original 2000s LS1 F body gas tank, which sadly is impossible to fit in a 70s F body. The guy was forced to go with a E-rod kit instead which has no gas tank pressuse sensor to delete, and the CA techs passed him. I have yet to see a legal junkyard LS swap and that is the dirty secret of the used LS swapping industry that no one talks about. Your frind gave you an illegal pass and he can lose his inspector license if the EPA gets wind of him. They do hunt down crooked inspection shops. Posting your illegal activy for all the world to know increases the chance of your friend being punished.
MOST of the swaps throughout the country would fail! The car hobby guys would be at your mercy!!
Shameless attempt at argumentum ad populum, a fallacious argument that concludes a proposition is true because many or most people believe it or do it. In other words, the basic idea of this argument is: "If many believe so, it is so." It is logically fallacious because the mere fact that a belief is widely held is not necessarily a guarantee that the belief is correct; if the belief of any individual can be wrong, then the belief held by multiple persons can also be wrong. Because alot of people believe that a incomplete LS swap is legal does not make it legal or their opinion correct.
You made an incorrect statement that could get people in trouble. I corrected that and it is up to any persons reading this to take heed or not. If the turbo kit you plan to install doesn't have EO or CARB approval or requires non approved retuning of your ECM, then it is illegal and would be failed by an honest inspector. Being honest is not easy or makes you friends, least you fall prey to ad populum.