Can vented cortina discs be purchased at local stores. Got solid disc but they were not sure if vented discs are available. if so any part numbers etc. Tks for all the replays to my previous post.

capri vented discs are what you need. Then either calipers to match or buy a spacer kit to make your fit the vented discs.

Do capri vented discs bolt on to the hub my cortina ones do, they do not use the wheel studs and have four holes only. No screw holes to hold drum on.

Yes they do
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Vented disc are only an advantage if you are getting the brakes so hot they start to fade --- if not you are just adding unsprung weight and cost .