Front cover fit problems which one to use?

[87gn-newbee]

Want to get this part only once so which one did you go with and any problems with the fit. I've read there are fit and casting problems with the HV covers that is why I wanted to go stock with new pump and seal. Who has used some from TR vendors if so which one.
Dan

 

[MeanBuicks]

Here's what I bought a number of years back. (#81ZX5423A) Although it states 14-bolt oil pan, as you can see in the photo, it fits the 20-bolt pan too.

The one I received was made by Elgin. Combined with a Melling high-volume oil pump kit, I've got the better part of 100,000 miles out of this and I still have good oil pressure.