Bolts are same size and thread pitch just .5 shorter. Metric. I just took a sample of old bolt to hardware store found a nut that fit it to establish thread pitch as I am not always sure on metric! Once I found the correct nut I then went to corresponding size bolt bin and found one that was shorter than my sample. And I bought some super long ones to assist in the reassembly. I used the long ones as placeholders. By being super long I could insert them thru pan,gasket,tray,gasket and into block and let it hang. That allowed me to get the gaskets all lined up and a bolt in each hole prior to cinching up. That and some gasket stick em! Then I just started replacing long bolts for correct size one at a time. Full disclosure Best Neighbor Ever was called in for another set of hands! He loves Jack and Coke so I keep a bottle on the shelf for him. He is a true Mopar guy as well! Has a Demon too. We did it with engine hanging from chain fall, this increased the complexity ten fold. In a real shop I would have simply spun the motor upside down on the fancy engine stand and installed it all upside down easy easy!