will a 2006 cummins engine block fit in a 2000 5.9 cummins engine 24v

5.6ltr? I can't find one.

sorry i meant a 5.9 cummins engine also

So how much of the engine are wanting to use? Just the block or a complete swap

its the same type of engine just different years

just the block

There is a major difference in fuel systems and that needs to taken into acount.

Block for block should work just fine from all the info I have.

ok thank you

Welcome