Dabling

How's it going everybody.
have go myself into a bit of a situation. i had a 350 roller block with vortec heads in my boat and have damaged the bottom end.
Found a nice looking bottom end which had been freshened up but wasn't a roller. researched i could swap it over and ordered the cam button, plate and lifters with the link.
Fast forward all the work and the roller cam 3 bolts don't line up with the timing gear on the new bottom end and cant use my timing gear as the cam button doesn't fit in the hole.
Any work arounds for this.
Thank you for any help