Sure it is, anytime you stretch the king for crawling its worth the time and money. I did mine a lil different as did most others who stretched their kings. The guide done by HPI was intended to get the beginer started, they are doing 2 more stages or phases of that build also, so if you are interested, keep your eyes open for more installments. The King is very capable once stretched and modded to crawl.

Have fun with your king!!!