Where did these buckets come from?

[Grumpy old man]

Before you get to attached to those seats you need to know that they are not built like most other seats in that the material "velour" is bonded to the seat foam base which makes them difficult and expensive to have them reupholstered . if your happy with the blue material you can clean them using Windex and a shop vac also any grease stains will come off by using lacquer thinner sparingly on a lint free towel .