"big project" check out this 1/6th
guys, I own one of those and also a SAVAGE.
This is a MARDER from FG (made in germany). It has a 23cc two-stroke ZENOAH engine that produces around 5HP. Top speed stock is around 75 - 80 km/h. But with some tuning they are capable of doing more then 100 km/h. These cars are top of the bill. Many (almost all) european championships are won with this mark FG. They cost around 750 dollar , but for US citizens they are cheaper (you don't have to pay 21% taxes).
You can order one (or more) at pitstop tuning center in Holland (europe)
this shop also has a online shop.
I hope this helps.
David.