I need to rebuild my factory GM shifter in my 63 Buick Lesabre. I would like to do this correctly. The trans is a cast iron T10, and the shifter needs more than just the bushings on the gear selector rods. I am assuming this is the same shifter as early Corvettes, Impalas, perhaps even Fords and Amc. This is important , when the big nailhead, dual quad is screaming towards 5 grand, this has to be precise. I am way too old for this stuff, but it has to be done! Morley