tach mounting

I got an Auto Meter Sport Comp tach with a shift light, I'm thinking about mounting the tach under the dash over the floor hump angled towards the driver, and get an extension cable for the shift light and mount it on the steering column where a Sun Super Tach II currently resides.

thats along the lines of what i was thinking, since i cant mount it to the dash unless i made a bracket to extend it outwards some... the downside is having to look down to see your rpm