3l crank stub mod

Hi all,
I am finishing up converting from one 3l block to another and i
Noticed that the crank end on the flywheel side sticks out roughly
1 inch on new block and the old one appears to be flush???

Do i need to gring/cut that nipple down flush or can it be left alone
Without worries?

Thanks,
Aaron

grind or remove the pilot bearing.

Cut it off flush or pull out the pilot bushing.





I cut mine off, and don't forget to cut the two aluminum tabs off the block where the alternator mounts:

Awesome, thanks guys