Engine out

Halcyon · 10 Jul 2017

Random fact:
SKF made the ball-bearings for the Millennium Wheel in London.

911munKy · 12 Jul 2017

After a bit more digging around here is a cheaper supplier of the same bearing:
http://www.onlinebearings.co.uk/320...ular-Contact-Ball-Bearing-Polyamide-Cage.html

Also it is a different (less) width than the original Porsche bearing so I imagine that a spacer is still required, it is still much wider than a single row Porsche bearing.

Above linked dual row bearing 20.6mm
Original dual row IMS bearing 23.8mm
Original single row IMS bearing 14mm

All of the above have an inner/outer diameter of 20/47mm

Sorry for any thread hijacking.

Source: http://burnerscars.blogspot.in/2016/08/sourcing-your-own-porsche-ims-bearing.html