as above, everything that relys on the 12volts will need changine, all the lights, starter, alternator, some dash componants, coil,
as said, swap the starter and coil, run off a 12 v then add an alternator for 12,v
have had a big perkins in a series 2, Td, was ok fer me, but have seen 'arf shafts shredded with them, yer can uprate the axle componants to suite the engine, new shafts,
ended up having to addapt the gearbox tunell and crossmember, also a few cuts in the bulkhead to get the engine sitting right, but it were a monster after


