Wow! I will be following this one. It's great that you are going to do it as close as possible to the real one. Those radius rods will be a real challenge. I imagine you will have to scratchbuild them. That will be fun to follow.
I had never seen this P/U before either. Putting the front and rear axles so far apart is really cool.
I am old and feeble, with poor eyesight. Is that a Ford FE engine?
I Googled Ian Roussel, and saw this little shortened car.
I have been collecting 1/25th scale kits and parts, to build hot rods and vintage dragsters. I am not sure if I have the body of this one, but I am definitely going to build something like this car.
And as MikeMc said, please post pics as soon as you can. I think seeing the earliest stages of building would be a lot of fun. I would like to see some of the fitting and mockups, etc.