Sure you can do almost anything, given the skills, the tools and the budget. After Sputnik went into orbit over the USA, I remember going outside during a new moon to watch the Red (Communist) Moon pass-by. Then the Soviet dogs were launched into space and Yuri Gagarin becoming the first human in-space, he orbited while the best we could do was to go into space on a parabola and descend back to earth. But we made the announcement to the world: we were going to the Moon! And we did.
I think what a lot of people are saying is that for most people, it's not gonna happen, but many of us are interested to-see what someone with the knowledge, skills, and bankroll can do. The old adage: "speed costs money, how-fast can you afford to-go?"
My friend whom I've known for almost 50 years, he's a machinist, and he makes my VMax Gen 1 wheels in 17" and 18" sizes for the rear. He runs his own machine shop, he and his father both worked as machinists for Harvey Crane of Crane Cams, before he went-out on his own. He once made a small production run of billet KZ 1000J cylinder heads because he found a market. I don't recall any naysayers picketing the front of the shop when he's been doing projects. Most of his time is doing mods to Porsches and offshore powerboat racers' powerplants. He does things for me when I can afford to use his services, such as undercutting transmissions too. He did the machining to install Hyabusa top end components into a Gen. 1 VMax cyl head. I don't recall any naysayers outside the shop, but I'm sure there are some, somewhere, saying to someone, "noooo!" I'm with pighuntingpuppy, stay away!