There are two areas of concern for clearance when installing the gear drives. The first is the cam chest cover. One of the bolt bosses on the inside of the cam cover needs to be shaved down a bit to clear the gear. This one is no big deal.
The other one is the clearance of the cam lobes on the engine case itself. They can hit at the lifter area and or at the area above the manshaft bearing. The most recent swap I did was to a Zippers 657 in a Heritage. I had to remove about 1/8 from the area above the main bearing. It is quite involved as you need to clean all of the oil from the area first, plug up all passages, tape off the main shaft bearing and begin to cut away. Jims has a jig with a cutter head that connects to a drill that makes this easy. I used a die grinder. The toughest part is the clean up after. Getting all of the aluminum out of the chest is a B!tch.
Having said all of this the Wood 5g with a .575 lift probably will not need any clearancing inside the case. The cam cover will most likely need to be clearanced.
Good Luck