I was lucky enough to find two globes, however, while filing the housing to place them in, I hamfisted one of the globes and broke it. No problem, I referred to this article on using an 1157. I mentioned this to my mechanic, who is deft at things of this nature, he tried without this instruction and said quite simply, it's impossible, since the filament and outside glass are one piece.
Your directions make a leap of faith into placing the 1157 back into the housing. Could you slow down and give a step-by-step of how you actually created the new globe out of an 1157 amber bulb? Thanks.