Are chevys and toyota aftermaket 6 lug rims the same bolt P. I order them from summit and they said yes but want to make sure before I have the new tires put on the rims. My 4 runner is haveing 4.88's install so I don't have access to check it..

yes

the bolt pattern is the same, but the hubs are larger on a Toyota, so a Chevy rim won't fit a Toyota, but a Toyota will fit a Chevy

The aftermarket wheels are the same for Chevy and Toyota. (It is simpler/cheaper for the aftermarket manufacturer to make a common wheel for both makes.)

Thanks, Just wanted to make sure before I have the tires mounted..