Really interesting project and I love the look of the 55. Hope to acquire one one day.
Maybe I am odd, but when I see inch measurements in connection with an LC I get a little twitch. I'm American and grew up with it, but in the last several years I've gone completely metric, especially with LC stuff. All the dimensions from Mr. Toyoda are metric. Just had a friend pick up a socket set for me at Home Depot in DC when he was back and he had to work at it to get a set that was metric only. I remember when the US was thinking about moving metric in the 1970s.
Anyways, I am excited to watch your project and please ignore the shells I am lobbing down from the peanut gallery.