225 to 318 or 360 LA

Ok I have my pick either 318 w/904 or 360 w/727 i totally want the 360 obviously go big or go home. just looking for what else I would need for the swap. this will be my first time doing a swap
I have the 7-1/4 will be upgrading to either 8-1/4 or 8-3/4 just looking for some help going forward.