I don't think the crank and rods should be the center of concern. It would be impressive to see you Successfully tap the oil gallery in the block and put in oil jets...

Oil pump is the achilles heel here, Its response to oil pressure demand is weak, and its driving mech sucks. If you do get that gallery tapped, your demand for oil pressure has increased and you are going to lose supply to other critical parts .. within a time frame. This will work for a while, but longevity is sacrificed.

The oil is used to extract heat from the pistons, not necessarily to lubricate them.

the head is the other weakness. even if you got a custom cam ground, the valves are not going to let enough exhaust by quick enough and they are going to expand and wear the valve guides. The turbo engines have sodium filled exhaust valves to reduce the expansion.. and I beleive a different size valve.

The intake mani is not prepared for the pressure increase you will be loading it with you may see uneven boost b/w cylinders or a cracked mani.

not hating here, I ma sure it will work for a while. I have seen N/A 617s turboed that sounded pretty good. They were fresh installs.

__________________