case 450b repower

I'm looking to re power my Case 450B with the cummins b4 390 non turbo out of a 580l. Wondering if anyone here knows or has done this. That's the same engine as the C model so it might make a good swap. My 208d is pretty tired and my scrapper friend will give me the running Cummins. I guess the main issue would be the torque converter. Doing some p/n research to see what else might be involved. Any help will be appreciated. Thanks,Jonathan

case 450b repower