Saving Money On Electric Multiple Units

I am currwntly implementing this method on MP54’s and the new Walthers Metroliners. Instead of having every car powered, I will get two Metroliners one upfront and at the end and I will buy about 3 to 5 more Amfleet coaches and install pantographs on them. In the future I will power them or simply buy all powered ones. The same concept applies with the MP54s.

Hmmm - Difference between Budd Metroliner and Amfleet coaches

How close do the Metroliner and Amfleet I shells match?