I went yesterday to check this Beetle

It appears to be a 68/69, unfortunately I didn't check the chassis number because I was so excited and hopping around like a mad bunny by the car, however one of the owners changed the original 1500 engine to a 1600 twin port..with alternator and late model shroud etc etc..As you can see in the pic, it has a set of VR6 rims and has adjusters in the front torsion tubes...the car has been parked under a tree and is currently not being used
i'm in love with this Beetle, sadly the owner does not want to sell her at the moment...

My questions are:
1. On the crankcase,under the distributor, it is stamped "Hecho en Mexico" if I recall correctly..I have never ever seen this on any other Beetle engine..what does it mean?The engine still has the SF** engine number..I checked the crank pulley for movement...NOTHING

2.it has a 90 MPH speedometer..did the 68/69 Beetle come with these or a KPH speedo?
3.Roughly how much is it worth? Car got all paperwork etc
Answers will be mucho appreciated....
Regards
Blitzkrieg
ps- I apologise for the poor picture, took it with my phone...

pps-I hope the guy sells because I want to build my Blitzkrieg Beetle
