Hi Neil, Stu Storey rings a bell, any more info? The shell was painted back in the 90's by Julian Alton in his garage (a 20+ year employee of Modelsport in Otley).
Dan, I'd love to get the slipper bits have put a 'proper' motor in but my gear box case has the small hole in it like you found out. Any suggestions? Have a look on hobby king site they do a lipo pack which is 22mm tall. I've got 5 trakpower thin gold bars!! Also, new Trakpower was on ebay 0.99p no bids. Collection only tho. still I should have got it and organised a courier.
Thin battery options
http://www.hobbyking.co.uk/hobbyking...arehouse_.html
www.ebay.co.uk/itm/BS803-028-7-4v-3200mah-Li-Po-Battery-Pack-20C-Lithiumpolymer-Rechargeable-/360807119211