The F103 front arms won't fit the F102, unless you modify or replace the chassis. It's not difficult to find the original F102 parts as the same front and rear ends are used in the Group C chassis that Tamiya recently rereleased. Search ebay for 0005370 or buy it through TamiyaUSA
http://www.tamiyausa.com/product/ite...uct-id=0005370
For rubber tyres and wheels, any that are made for the F103 will fit straight on.