My instinct is to just LS swap it because I am a big fan of that platform, but I have done a bunch of those and this engine runs great other than being carbed. I might do a swap down the road when I start wanting to make more power, but for now I just want to drive it with the family while we putter on the random projects.
I have a J20 with the 360 and the Carter 2100, so I could move the Sniper over to that if/when I engine swap the 58. I would probably keep the existing 2G in a box to go with the engine when I pulled it.