Steering rack polly bushes, & brake discs.

[chriseyj]

Hi I noticed last night that my steering rack poly bushes have a cutout/ recess on the bottom as well as the one all the way round where the clamp seats.
The rack chassis plates are 30mm accross but the recess is say 25mm. Just wondered how anyone else seated these on the rack plates.
Thought they may need a packing piece or cutting to fit.
http://www.agmotorsport.co.uk/images...ddeb45b4fda697

Also do all sierras have vented front discs, I was given 4 front calipers when I bought my diff and am not sure what discs to buy.

Many thanks Chris.