Saw blades for paint removal is the standard way of removing paint in Pakistan.
Anyway sticking an m113 into old american barge is laughable, but to each their own.
For yourself get a 605 and get a dieselmeken pump and injectors for it
Also
Dont use the 722.4 from a 250d but rather the 722.3 from an older 300d, you may want to fully rebuild it before installing as its ancient equipment now and allmost all will have bad soft parts