Will post a build-blog sometime soon, probably after testing it first on track. Basically, here are the things that I had to make or machine myself:
1. 4mm FRP main chassis
2. 2mm FRP upper chassis
3. Shortened rear drive shaft
4. Narrowed diff housing
And the stuff you need to buy:
1. F104 front arms
2. 5mm ball studs
3. 30mm turnbuckles
4. F104PRO diff joint
It looks simple on paper, but the R&D took me around 4 months. I could have just bought the conversion kit from Field One, but making your own from scratch makes it a lot more fun.