Oil pan sealing. Stripped bolt holes

[AHarada]

I'm at the point in my build that I'm installing the oil pan. I have a brand new Mazda oil pan and a Garfinkle oil pan brace I'm installing. I made my first attempt tonight, and I made the mistake of not cleaning out the bolt holes with a tap first and ended up stripping a few of the bolt holes (good thing I didn't crack the housings). I'm going to try to put a helicoil in those holes. What are the bolt sizes that they use? Is it a M6x1.00? I'm thinking about also using a Moroso stud kit instead of the bolts included in the Garfinkle brace kit.

[IR Performance]

They are m6 x 1.0. Helicoils are fine, just make sure you thread them in enough so that part of the coil does not stick up past the oil pan mating surface. I always run a tap first because the built up silicone and grime causes the bolts to easily strip. I also used the Moroso stud kits will good results. Make sure you lay the pan and brace on first, then screw in the studs.

[cewrx7r1]

Remember that the torque value for these is very low at 74-104 inch pounds!
I suggest a medium value. So many people have stripped this size fastener on their engines.

[AHarada]

To update: I got the oil pan sealed and all of the bolt holes are in good condition. I ran a tap through each hole, and pulled out a nice amount of old silicone. Since the bolts only go down about halfway through each hole, only the upper half of 3 holes were stripped. So with the Moroso stud kit installed, none of those were an issue (luckily, those 3 weren't through-holes).