Swapping between 98.5-00 & 01-02 Dodge Cummins ISB 24v VP44 Engines Many people need to change their engine out due to “53” blocks, catastrophic failures or just plain wear & tear. Most do not know about the differences between the two “Sub generations” as I will call them. I will try to explain it all in this article. I will also give known ways to accomplish the swap & why. I will also give an alternative way that I presume will work, but cannot guarantee.Firstly, for some