The Pantera sweep is 95 degrees, the shortest available for the Lucas motor. Sweeps are available in 5 degree increments all the way up to about 130 degrees. Stafford Vehicle Components in the UK are a good source and their web page has a good exploded view near the bottom.
http://www.s-v-c.co.uk/prod_wipers.htmlContrary to others suggestions the park switch is not changeable and is a fixed switch with a plunger to activate. What triggers the switch and dictates what location is 'park' is a cam on the main gear. Now the cam can be changed between two locations to provide for left or right park.
I'd post a photo of the gear, but I just changed computer and have nothing by way of photo editing software to reduce the size at present. The plastic gears are what wears out and usually the source of a non-working wiper motor.
In a selfless plug I still have some of the replacement Lucas plastic gears I sell for $15 + P&P.
Julian