Any body know where I can find a diagram of how to build my own digital speedo and LED rev counter?

Try taking a gander at this place

http://home.c2i.net/toratlel/Dash7.htm

Has anyone built this? Is it finished? I can't see any code on the site to programm the micro with.

micro comes pre-programmed by tor, the chap who designed it and knocked it together. check the "digital dash" thread under electrics for more - hope to make kits available soon
atb

The LED rev counter is really simple to make (even without a programmable Microcontroller)

http://members.tripod.com/~foz11/DIY_MOD_s/Digital_Speedo/digital_s peedo.html

The first one realy looks scary.

Rev counter not to bad.

The project (building the car) taught me to weld and measure, but I think is above me.