[Tigers] Speedometer gear

[tym2 at comcast.net]

Tigers, 


I have a T5 tranny in my Mark 1A with 3.73 gears and 15" wheels. From what I understand, the only way to identify which tranny it is is by the identification tag on the tailshaft (unfortunately, there isn't one). The numbers on the casing don't mean a thing! 


Yesterday I removed the speedo gear from the tranny. Its marked "15R" and on the opposite side, there is a "4". When I'm driving about 40 the speedo indicates about 80. Does anyone know who I can talk to to get the correct speedometer gear? 


Thanks in advance. 


Tym McDowell