JDBurton,

Just playing a bit of devil's advocate, but if you are talking about engine powered side loaders, in my opinion there is little difference to a conventional lift trucks. The main differences seems to be in a travese mechanism for the mast (rollers & cylinders), maybe some stabilizer jacks (cylinders & pads) and a power transfer case. from tranny to differential (similar to those used in many electric units). If they are electric type add in the electronic controllers(s). The main issue might be in vehicle you might need to haul them on due to overall length.