r 3 combo help

The bolt holes in the valley rail are for valley pans. You do not have to run a bolt.

You can convert the block to wet internal pump. A rear main cap and a blueprint to know where and how deep to dril. I wouldn't. Just buy a belt driven pump and never look back. You still use a wet sump just have to ad a fitting to the pan to draw from. I personally use a SCP pump. Made a block that fastens to the engine block with countersunk bolts. Then has two threaded holes to mount the SCR bracket to.

May be selling the pump and mounts.