Its good to see you are enthusiastic about the 'little' cars again mate. Went to my first electric race meeting today, the track is half an hour from my front door and I ran into an old mate there who I didn't even know raced r/c!! Got myself an AE RC10B4 buggy for racing and can't wait to start.
As for your new buggy/truggy, why not cobble together a rolling chassis out of spare parts and get yourself a Matrix on the swap programme from CEN? Either that or just get something off ebay!!