Huh??? It has a 4 stroke motor in it? Or is it a 4 mil stroker crank?...... for starters do some research then when u do that research do some more. This forum is awesome lots of great folks ready to jump in and help you out but you need to do your research to. First off find a repair manual for the banshee, loads of info in there you need to know. Then buy or make a leak down tool, get a compression tester, and a flywheel puller cause you will need all those trust me. So with that said welcome to the forum. Now let's clarify your issues. The top end is still intact right? Meaning the jugs head and ECT is still all there or did it "blow off" and is no longer intact? And is the crank still in good shape? Does it turn over at all? Sent from my SM-G930R4 using Tapatalk