I have to agree with you, turbodiesel.

Besides, you see the Fins pushing past 6K rpm's driving 10's of thousands of miles on these things with over 400 hp and 3 liters. All stock internals.

Mine sees 5K rpm everyday that I drive it(lest conditions do not permit). It's been that way for 60K miles from 225K. Never ran better.

Then again, we were initially talking about the 617. But you mentioned the 603, but the 603 is a true diesel "screamer".

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)