Bellhousing bolt size

I’m collecting parts to swap out my Johns 700 automatic to a T5 and I need to buy all new bolts. The automatic uses an adapter plate, it doesn’t bolt directly to the block.

Can anyone let me know the thread size for the bolts into the block, and how deep the threads are?

Thanks

3/8ths-24, and are about 3/4” deep.

Just stick a toothpick in to confirm that.