You have an excellent plan. The 3 liter is very well regarded for longivity. If it were mine I would have the machinist examine the bearings and reuse them if they are excellent. If it has had any care at all at that mileage they may be virtually without wear. We have reused them several times in my engines with good results.

The bores and rings are much more likely to need attention in my experience, but again, at that mileage if it has had good care you may not really need much there. I would probably replace rings and hone it as a minimum if I had it apart though.

If your machinist has a lot of chevy expereince (cheap parts that wear fast) the tendency there is to just do everything automatically. With the longivity and parts expense in a benz that is just not the right way to do it.

Be sure to do the cam chain guides and tensioner while it is apart.

Good luck.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.