I purchased a mac 4 into 1 kit for my 1971 CB750 and it did not come with any instructions. I do not know the torque specs for the bolts. I have sent mac four emails and they have not replied yet. Its 43 degrees today in northeast Ohio and raining so I have plenty of time to install the new exhaust today but I don't want to Wait till Monday to call them on the phone. Can anyone please help. Thanks.