Only strain of 6th gate it takes the same negetive impact (or effect) on his body as the 6th gate, like the time of how long he can use it for, him dieing after it, and breaking bones on every attack he does. everything else like his strength multiplyer , blood flow, chakra flow, and heart rate is the same as normal 8 gates.

I say Naruto high - extreme diff

Guy low diff

Naruto wraps himself in TSO and Guy kills himself punching it