Thank you all for your insights. My primary reason for modifying to 7 or 8 wide is my dislike of the 6 wide scale compared to other moc vehicles (semi trucks, vans, cars, etc)...... A topic which has already been thoroughly discussed in a separate thread. I hadn't given much thought about the fact that the lengths would also have to increase to preserve the proper proportions. Since much of my layout has already be designed, and some of the railway related structures have been built, I may just have to accept 6-wide for now. The layout just doesn't have the space to increase the track lengths and distance between switching points that would be required if i were to upscale. Perhaps I just need to buy a bigger house for my Lego hobby. Now how do I explain that to my wife?
Thanks again!