Cobra Aluminum Ribbed FE Oil Pan Questions

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Hi:
At present I have a 428 FE that is equipped with a Milodon oil pan which is Tee Shaped. I have a chance to buy a new old stock Cobra aluminum (probably reproduction not original) FE Cobra ribbed oil pan. Currently, my Milodon pan gives me no problems, it does not leak, and also is plumbed to have the SW oil temp gauge bulb and sender at the rear (top driver's side Tee) of the pan. Obviously, the oil pick up (inside the pan) fits this Milodon pan.

Here are my questions:

1) Do these ribbed Cobra pans have any downside to them? ie: are they machined well and are they prone to leaking? Do they need tweaking?

2) The pan I am looking at is not currently plumbed (via a screw in oraface) to receive the SW oil temp sender. How hard will it be to drill and tap in a hole for the SW oil temp sender.

3) What amount of internal pan clearance will I need for the oil pick up? In other words, the oil pick up for the pump should be what distance away from the bottom of the oil pan? I hope I can use the current oil pick up but the school of hard knocks has shown me that nothing comes easy so I guess I have to be prepared to get and fit a new oil pickup if the pan changes. Any idea as to what oil pickup this would be and where to source it?

Thanks for your help ..

Attached is a pic of my current pan....