I get that 67 every time if i don't hold the clutch in while i run the test. I think it may be due to a bad aod/5speed swap (it is a 5 speed now). Or you may be required to hold the clutch in while the test is running.
I bought this balancer when I spun mine...
http://store.summitracing.com/partdetail.asp?part=PIO%2D872010&N=4294871851+4294840126+4294924929+4294871826+115&autoview=sku
i really liked the timing marks on it, works great.