Maybe a stooopid question....

[trick-kit]

The biggest difference is that the Locost is live axle, based on the MK2 Escort and using the front uprights from a Cortina, where as the Roadster is based on the Sierra so it has independant suspension all round. Dimensions aren't really the difference as there are a lot of "wider" locosts out there using the McSorley plans available on the net.

Hope thats all made sense

TK