The name you will find in the road racing circles is Dailey Engineering. If I were doing the conversion for my LT4, before putting any money on this platform, I would begin with the LTR block, let LME prep, balance and assemble it and depending on the depth of your pockets, have them tune it on the dyno so they can set up your dry sump system perfectly before you drop it into the car.
Now... if you are going to build the system, the Corvette stuff is all unique to the Corvette. The crank and everything is specific and will not cross over.
Here you go!!
https://www.daileyengineering.com/
LMK if you need any assistance with this project. I have built several LS engines in C5s like ours with their components.