Anyone know what the bolt specs are for the OE cross brace that goes under the chassis? I'm talking about the one that hovers over the midpipe (toward the center of the car). I think it's M10, but unsure of the pitch or length and don't have any bolts to try out. Thanks in advance.

 

Also the bolts that connect the factor rear muffler to the mid pipe.

 

This is what the Toyota Parts List shows. You can SEARCH the parts online or through your Dealer's Parts Department.
It does not mention the Metric sizes.

Hope this helps,

MR_LUV