just had to reply on this....

as i switched begin 2020 after 5 years regularity rallying a '70 E9 to a '82 928...
Indeed , the 928 is already a "modern" car compared to the E9 and performance is ...as you have twice the HP/torque. ( oem cars )
( my E9 has very low gearing for rally , so almost no more drivable on highways )
Yes, for lines i prefer the E9 , for driving fun so much more the 928 . In the end it's a "generation" younger with a V8.
Don't know the US market , but my "Europe" search experience ended with also $40k for a "solid" 928.... parts are expensive and his engine / transaxle isn't that "basic" as a M30 / Getrag ..... but they are incredible rust free compared a E9.
Prices are not ( yet ?) "911" level but most cheap ones are worn , to long driven without maintenance by a generation of people who wanted a "Porsche" but in reality couldn't afford it.
View attachment 108466
View attachment 108467