Flywheel, Clutch and pressure plates help

[Hellramsden]

What am I looking at here, ive tore apart 2 12a engines and theres a different combo between them. I messed up and just chucked them into a box for later and now I cant remember which went to which.

[gt_james]

215mm is S1/2
225mm is S3

[Diesel747]

Pressure plate & clutch at the top of the picture goes to the flywheel at the bottom of the picture, bottom flywheel looks like it maybe a lightened after market ,whilst top looks like the factory.