I, "searched" and didn't find this bike on The Forum. I was at Toys-R-Us and saw this bike on sale for $179. This looks like a Stupid Fun Build. Technically the challenge is the 4" tires, but numerous people have answered that with ease before. The spokes seem skinny (36 spoke wheels), so maybe a re-lace would also be in order. I also would lean towards making an under-seat gas tank. But doesn't this look like a fun build? Just thought I'd throw it out there. I personally wouldn't be able to do it- one gasbike is enough in this household, according to my wife. It's a Mongoose Dozer.