what axles to use?

i have a 90 wagon and i'm trying to find out if the DA axles are the same as the DC ones.
everyone has been telling me if i'm going to put my LS motor in then i have to use DA axles, is this true?
thanks.
everyone has been telling me if i'm going to put my LS motor in then i have to use DA axles, is this true?
thanks.
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