fred's garage 73 scamp

iv'e got lots of time to restore my car but I do body work and paint 5 days a week and don't feel like doing on the weekends. and of course not enough cash. I retire in less than a year so i'll get going on it then. now I'm trying to get the running gear set up it's been lots of fun. just had my 904 rebuilt and installed a gear vendor overdrive so now I can keep my 4:10 gears and still keep up with traffic. best improvement I've done so far.
I want one of those Gear Vendor OD badly. How is it working for you? Hard to install?