I just destroyed my 350/260hp gm crate motor. But I have a 383 blueprint on its way now. However, since the engine is seized, I cannot remove the bolts from the flexplate and the torque converter. So, they must now come out together, and I had wanted to rebuild the transmission anyway. But I'm trying to find out if I must disconnect the driveshaft before I attempt this. I will have 2 other people helping me, so I thought it might be possible to simple slide the spline out of the transmission as I hoisted it out. Anyone have any ideas on whether this is possible/easier?