VSS for cable speedometers

[alsalp]

So I am researching a TBI conversion for a Pontiac 350 with a BOP th350 and later a 700r4 (these share the same size speedo drive housing unlike chevy bullet size)

what is typically used wishing to use a vss and a speedo cable?

I have seen this but it seems pricey (especially for those of us who are junkyard scroungers)

Look at #6

http://www.jagsthatrun.com/Pages/Spe...eedometer.html

but is this:

http://www.autozone.com/autozone/par...vice=374810220

or this the same thing? :

http://www.autozone.com/autozone/par...8_23882_20285_

If so these are half the price new and junkyard source able for cheap

Does anyone know if they are compatible with the 1227747 ECM truck systems?

[Six_Shooter]

Can you post the part numbers and/or applucation so that those us us outside of the U.S. Can look it up? We get directed to the application selection page when clicking on those links.

[alsalp]

Autozone: Duralast SU1111 for 1993 chevy caprice 5.7 TBI

or SU1112 $54 - $64