3/8 studs will not torque tight enough. These heads use 7/16.

Can't remember the exact torque but you go 85 lbs with stock 1/2" bolts. You can go a little more with 1/2" studs. 7/16 stepped studs went around 80 lbs. A 3/8 was only around 60 lbs.

10 head bolts at 85 lbs was not enough. Now you want to go with 18 3/8 head bolts. Would not recommend that.