im putting a reworked engine back into my 82 from the 84 parts car.

i have 3 turbos which i could bolt onto the engine. one is the 82's with 237k, and some shaft play. the turbo on the donor engine has some shaft play and has 180k on it. and i have one i purchased from a mechanic with 170k thats an 85 and no shaft play detectable.

how do i pick which one to bolt on?

how do i set the boost with the turbo on the bench - is that possible?

thanks,
dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car