Cable speedometer to Electronic?

[norcalvp]

I am in the middle of putting a 2004 Taco D-cab body onto my 97 Extra Cab Chassis, and other than a few wiring problems, and a little body work it's going pretty good. Not nearly as fast as i would like, but it's still comming. I will be using all of the interior from the 04, but still using my 97 engine harness and engine harness. i will be using the 04 fuel tank, and the rest of the wiring will be from the 04. Here is a link to a few pictures
http://www.tacomaterritory.com/foru...97&postcount=10

Anyway i was originally going to use my 97 gauge cluster, to keep the mileage correct, and everything else, but now that i think about it, i really like the 04 cluster, and it would take a lot less wiring to make it work. The only snag is my 97 had a cable speedometer, and the 04 had an electronic one... What would it take for me to convert my cable driven speedo to the electronic version? links to parts???

Thanks
Steve