After reading the CJB that I recently obtained, I have become convinced that it is simply a KJV with the names restored, and nothing more.
There are more differences.
The KJV is a formal equivalence Bible, while the CJB is a dynamic equivalent version. The CJB was also the work of one man.
Oh BTW, first I ever heard dispensationalism equates Jews with Israel. The theological method of dispensationalism avoids such error by not interpreting the OT in light of the NT. There’s a thread on that now ongoing which is very good. You might be confusing supercessionalism or replacement theology.