Well gents it's been a month rather than 2 weeks but I finally have an update.
I got the book in the mail and the trucks from Lionel. The book has about 90% of the dimensions I was looking for so I was able to do a rough model of the car in CAD.
There are a few major problems with the trucks though. Starting off it was about $175 for all the trucks and couplers shipped. One of them looks like its been stepped on, 2 of the axles on it don't turn and I haven't been able to get in touch with Lionel to try and get it replaced. They just don't pick up the phone when I call. So strange.
That's not the most significant problem though... see below pic. The Lionel trucks have extra "decorations" on them that the trucks on the real Queen Mary didn't have. In order to have a prototypical model the decorations need to go away. The coupler bracket on the trucks is on the wrong end and the brake decorations stick out too far on the end that faces the load bed. Basically I'd have to remove a ton of die cast metal and repaint them. It seems these trucks are not a great solution. Admittedly I could modify the design of the car by changing dimensions to accommodate the problems. But I really don't want to as I believe it would change the character of the car too much.
Do you guys know of any 4 axle trucks that don't have these problems?
Thanks!