ORIGINAL: The Mad Modder

Most of the parts can still be found new. The re-released Frog shares many parts with the blackfoot and Tamiya's latest rendition of the blackfoot(the blackfoot III), uses the super blackfoot body, which is just a blackfoot body with a different grill.
Body
http://www.ebay.com/itm/Tamiya-Black...item4aba852b52
Grasshopper parts
http://stores.ebay.com/RC-NITRO-HOBB...=p4634.c0.m322
Note:nitromaster has been getting more expensive lately, so you may be able to locate the same parts from another ebay seller for less money.

If you can't find the parts you need, let me know and I'll see if I can track them down.

Welcome to RCU,
Nate.