The bell housing bolts are 3/8-16.
You are probably needing a #12 external-torx.
15mm and 13mm for starter bolts
18MM Socket
Bell housing to engine block, 4 bolts are 3/8"-16 and 2 bolts are 7/16"-14.
The bolts that go from bell housing to block on a 5.7 (350 c.i.d.) are 3/8 bolts. standard thread with a 9/16 head. The bolts should be no shorter than 1 inch and no longer than 1 1/4 inch.
It can have a #2 18.375 bolt circle (12 bolts) or #3 16.875 bolt circle (12 bolts) or #4 15.000 bolt circle (12 bolts) Rich Gaiser 269-470-2886
On top of the transmission bell housing where it bolts to engine, looking at the flywheel. That depends greatly on the year and engine size, please ask a new, more specific question.
The Cat 3208 is an "SAE #2" size. Refer to your transmissions SAE size.
Same as small block. 3/8's inch, NC, (16 threads per inch) and I would use 2 and a half inch long, with lock washers. The head of these bolts will need a 9/16ths inch wrench.
crank sensor is located at the top of the transmission bell housing,two hex bolts that hold the crank sensor in place.
On the drums there are two holes. You need to insert two to bolts (size 10 metric) in to the holes as yoo tighten the bolts it pushes the drum off. bolts need to be about 3 inches long. i could be wrong about the bolt size