Another thing I have to stress here is if you're going to make some fake claims for bragging points you need to be aware of what a real build looks like and the signs the other person knows his craft. This person is you enemy. People knowledgeable about the subject of your fraud are very dangerous to you because you will have a hard time slipping it past them. If a noob asks you about gearing and you toss out some high gear numbets they go "ooohhh ok. Thas really cool man." But if they ballers they might say something like "wait, so your turning 16,000 rpms with 16 inch rims, what port times are you running to get that high?" Do you see how difficult it will be to walk that back? Or worse, start answering more and more detailed questions that increase in scrutiny? You want to avoid these people. If you have to, tear them down on a personal level. But never ever talk details. They can prove you're full of shit if you do that. Even better is to never acknowledge them and to tell the people who fell for it how the non-believers are the liars. Ruin their reputation, it's the only way. You need the 90% that might believe you to not also believe the real tuner or they will turn on you. Real recognizes real, meaning they recognize fakes just as fast. They are your enemy, remember that.
Worse comes to worse you can contact a notable engine builder in another country and have them build you an engine. No one will know who you got it from and you can just tell everyone you built it. It might cost you a bit of money but you're buying a legend. Might as well buy the best. And then claim you did it yourself. (edited)