Model A Ford cylinder block

I hope you enjoy these Model A Ford business card holders and the bare block. I thought it a shame there was no banger stl files so I used these free grabcad files and modified them.
If you do print these give me feedback on how well it prints.
The plain block is large, size to your liking. All the blocks with a card slot print at 100%
One file is the plain block.
One block has a slot where the valves would be for a business card. I redid this one so the deck has support.
Side card box no text
Side card box with Model A text
The head fits the plain block well. It will have to be scaled to 25% for the card holders.

Files for the head came from here
https://grabcad.com/library/model-a-cylinder-head-1
The Block
https://grabcad.com/library/model-a-ford-cylinder-block-1