So how can i tell if i have the axle lock option is it in the the vin #, if so what am i looking for ? I do have sport chrono package but no short shifter,i did add the GT3 short shift & could really tell the difference.What am i missing exactly if i don't have it as far as performance.
I could tell you in a sec if you have a Detroit Locker or not in your Ford as it makes a nice loud clunk when you drop it in reverse but this isn't Detroit iron were playing with here.

 

Not free, but will tell you everything about your car.

http://www.porsche.com/usa/accessori...fauthenticity/
http://www.porsche.com/filestore.asp...letype=default

My first Porsche was also a 1978 911SC purchased new in '78

 

look at window sticker. It's an option on manual Turbo cars. It is not available on Tiptronic and about half the manuals do not have it .

 

That's pretty cool, but $95??? There is not a single option that Porsche is unwilling to overcharge for... and I am dumb enough to buy most of them. Luckily they sent me one (inside a real paper folder nonetheless) or I would probably be ordering one right now.

 

Thanks ,i bought the car used & it came with no window sticker i was hoping there would be way to tell just by rolling around or something .Still curious as to what does it do performance wise.