only  the top 4 bolts  are the actual  holt tranny to motor,   bolts

those  supports  that come down from the side of the block  and kinda wrap around the oilpan  to connect to the bottom of the bellhousing, those  "might"  be  un threaded  ,  maybe,  but they should be a 10mm bolt that come thru from the front

the 4 upper bolts  should be 12mm  and come in from the tranny side