Yup. they fit. Quite nicely too. The driver's side needs a tad shaved off the motor mount but the passenger side has none of the typical issues like hitting the shackle or driveshaft. How stoked am I to have this finally figured out. I finally got serious about trying to fit the headers cause they looked so close. I figured out the path and angles they had to take but once in, they fit up nicely. You have to remove the bolts holding in the inspection cover on a 700r4, the oil filter and of course the spark plugs. I went in from below as well. If anyone ever has issues finding big block headers for our trucks, apparently hooker headers for a 81 camaro work just fine.