kewl so i know what to do hope this helps future members considering giving them a go
for the kotohira i linked above you would also need to purchase
Pantograph PS16N
http://www.1999.co.jp/eng/10098922Bogie Type Nissha Type-D (Gray)
http://www.1999.co.jp/eng/10007761Power Unit Type Nissha Type-D (18m Class) (Gray)
http://www.1999.co.jp/eng/10007790For the under carriage you either make it yourself or buy a suitable economy kit from greenmax or but a motor unit for each car and go bankrupt.
This is the same for all their releases to date but the parts listed above would be different of course depending on model example you may want black bogies for a differnt model and a different power unit etc.