I've got my 1997 4.6 Romeo torn down at the moment. I'm almost ready to put everything back together, just waiting on the bottom end bolts and a way to find some PI heads. The rebuild is mostly stock with some PI heads (hopefully). What does everyone suggest I go get machined? I'm just gonna fine-wire wheel the block deck myself and make sure it's even with a straight edge and a light, but is it worth getting the crankshaft balanced? I had a vibration issue before the rebuild because I had bottomed out sorta hard on a speed bump, only vibrated at full throttle in 1st and 2nd. I just want to make sure the crank is still sorta balanced, even if it might not be the issue. Other than that, I know I'll need to resurface whatever heads I end up getting, but I hope to god I don't have to put my old NPI heads back on (cause time is sensitive). Also, I noticed that the number 5 main bearing has side edges. My bearing kit did not come with this but instead came with 6 thrust bearings. The rebuild book I'm using doesn't specify the number 5 bearing install so I can't figure out exactly what's what with that main bearing. Any help would be appreciated!