Please check the Mimaki pump picture in attachment.
As you know, Mimaki pump is durable. But please ensure that the iron sheet marked in the picture is not impact the pump installation to your Roland printer.
I once installed a Mimaki pump on a Roland 300 that I had. Then (4 years ago) I thought that I had installed it wrong because it was so so loud. Maybe now they have controlled the noise but if they did not I could not imagine having 3 squirrels eats nuts in the same printer.