Thanks Steve,
A guy, here in Australia, won the 2005 nats with a Vector 40 running a 25VF on pipe. Like yours his was 45oz!
I have a Vector 40 ARF but it is 47oz, RTF, LA40, without whatever modifications I would have to make for the pipe tunnel. So not an option really.
As I said I have the engine and can get the cores but I don't really want another 46+ size plane at the moment.
Ah well more to think on. Thanks for the reply.
Craig