MGA Right-Angle Speedometer Drive

[WAN!LIIS!WSM@lennox.attmail.com]

I'm getting ready to reassemble my '61 MGA Mk II.  As I was looking through 
various vendor catalogs, I noticed a right angle speedometer drive on the 
transmission.  The drive attaches to the transmission, and the speedometer 
cable to the drive.

When I purchased my MGA several years ago, it had a Magnette transmission 
and did not have this drive.

Does anyone know if this right-angle drive is necessary?

Thanks,

Bill McCullough
Plano, TX