The bore/stroke/displacement specs are the same for the turbo and naturally aspirated versions of the 606, however, as a general rule, only engines built to be turbocharged should be.

Which chassis are you planning to install the motor in?
The W124 chassis had the 606.910 (N/A) in '95, and had a mechanically-controlled injection pump.
The W210 E-class chassis had the 606.912 (N/A) in '96 and '97, and the 606.962 (turbo) in '98 and '99. Both engines had electronically-controlled injection pumps.

Of good note, the N/A injection pump will not perform well when used on a turbocharged motor. Thus, if you do plan to convert a N/A motor, you must use the IP from a turbo motor, an IP which only came electronically-controlled. If you are planning to install it into a W124 chassis, you will encounter some problems. Perhaps you could use the mechanically-controlled IP from an '87 300D Turbo, which had a turbocharged 603 of the same displacement.

I'm thinking your best bet is to find a running 606.962 and save yourself the hassle.

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99 E300 TD -- sold
01 540i 6 spd