I have a H7 Pro that's just broken in and just recently bought the K3. I'm contemplating whether to sell the H7 or not. I've accumulated some spare parts for it from eBay including the longer chassis. The K3 is still being built, I'm just taking a break because my fingers are so d**n sore! Eventually, after getting used to the K3 and having enough spares, I will get into racing it.
Here's the progress on the K3.....rear differential and rear suspension so far.....only took me about 5 hours to get to this point....

... sad?
I've had the aluminum parts anodized red 'cause blue just doesn't do it for me. The chassis is still at the shop getting hard anodized and should be ready tomorrow. What do you guys think? Pointers are welcome for building the K3.