A man after my own heart with the tight in the wallet department comment. Also I just don't trust anybody but me to work on my cars - too many bad experiences in that department. From what I've seen roller bearings demand that the rotating shaft be aligned axially very, very closely. Ball bearings allow much more misalignment which appears appropriate with the IMS. I put a new IMS bearing in yesterday evening. I used a sealed Nachi greased ball bearing with a vented IMS shaft. I'll tell you I'm way out in the wilderness on this one as I made it up myself, but I'm sure enough that its right to bet my engine on it.
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