i'm trying to learn more about 525 and 540

I want another BMW in my life.. and I want to learn about the E34s, mainly the 525 and 540. Manual trans

I'm looking at an M20 525 (yes i know, slow) and I'd like a 540 if I cant get the 525. From what I already know, the M20 is a very reliable engine. How is the 540 engine in terms of...

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