Adding IAR bearing to an older 5500C3 with mechanical anti reverse pawls

[Loan Shark]

Can this be done by replacing the sideplate and few parts?  Has anyone tried this?  Just wondering if the parts are interchangeable.  I thought all C3's had IAR.  Turns out the older ones don't.  I noticed the collar of the handle shaft is larger on the newer reels with IAR.

[day0ne]

Yes it can be done. In fact I have some that have both dogs and IAR bearings.