Turbo Outer Bearing Size -n/a Inner Bearing Sizes Please

[flat]

Only the 944NA (early style with the disk on the back), or the 1986 944T hubs (disk on the back) have the same bearings that match the bus spindle.

The later P-cars use bigger bearings. There isn't a 'magic bearing' that fits the later Porsche hubs on the outside and the Bus spindle on the inside. (Atleast, I haven't found it yet).

The spacing between the bearings is too narrow on the 944 hubs anyway, so you'll have to space under the cups.