The LM-1 is allot bulkier than it needs to be, for sure. There's a lot of wasted space inside that thing. Still, it's a great operating unit. No complaints in that department. Here's a pic of my custom isntallation bracket. Makes it look like it's floating in mid air. hehe
I'll snap a pic for you this weekend. I have it set out just far enough so that I can still open the glove box. When I installed it, I thought it would shake around too much but its been perfect.
Here's the pics and basic instructions for the mount I tossed together for the LM-1. It really VERY simple and it works great. I can check my AFR at a glance by having it tilted perfectly to the driver. It's a pretty simple thing to do but if the pics dont' answer all your questions, just give me a shout.
All that extra space inside of the case allows for some pretty decent sized hardware. I coated the threads with fingernail polish once it was all tightened up to keep anything from shaking loose. You certainly don't need any metal hardware coming loose and rattling inside your $400 meter.