Early A mini starter question

If you hunt around the boneyards for a starter ('88-up on the V-8s'), you can find 'em with the factory heat shields on them. One bolted on top, one on bottom- these aren't availale from Chrysler anymore, so be sure to have both when you pull the starter

whats not available ?? the starter or the shield? ive never seen an adjustable starter,, cant imagine how it would adjust,, its either meshed to the ring gear or its not ??