Using the stock sprocket location will not work . You would still have to press it on and off a zillion times or less if extremely lucky and check the center angle each time, only to pull it out one more time to tack weld the sprocket after you got it dialed in .
I have a new ,never used APE sprocket holder with slotted sprocket thats pressed on a low mile intake cam " indexed for the exhaust side " and it's been set to 106 using a low mile , never been a part engine . If interested I'll take 180.00 shipped . That saves about 100 bucks vs new .