There's an original on Ebay right now with a dual master cylinder but it's missing the aluminum wedge-shaped piece that mounts between the booster bracket and the firewall. Item number 4614824645
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
Here are some shots of how it's supposed to look:
http://community.webshots.com/photo/...56812367TiQsYO
http://community.webshots.com/photo/...33760087zpUcrS
http://community.webshots.com/photo/...56812367znAXFR
Does the AutoZone kit have the mounting brackets and pushrod to connect to the brake pedal?
I'm adding power brakes to one of my trucks now, I can let you know in a few days about the firewall issues. There's no wiring stuff to worry about but I have to check to make sure that the brake/clutch pedal bracket isn't different at the firewall for the booster mounting bracket on the engine side.
Zenish,
I saw new boosters somewhere recently they were about $165 IIRC. I'll let you know when I find it back if you're interested.
Bob