So I’ve searched and searched but can’t find a definite answer. I have an 07 6mt with 1.25” spacer lift and under hard acceleration from a stop I get a hard clunk. If I don’t back off it will be a rapid clunk. Sounds like it’s coming from the front end. I jacked up the front and checked the wheel at the 12-6 location and no movement. The 3-6 location gives little movement but I don’t hear anything or feel anything loose. I rechecked the lower control arms and the driveshaft and both are torqued. What could be the cause of this? If I accelerate slow it’s now issue. Just went I get down I hear it. Almost like something is shifting but with the constant clunk I was thinking driveshaft. I’ve heard some people switch to the 5100’s and it fixed their issue. I’m good if that’s the fix but uncertain. Other said grease the slip yoke. Need some help to diagnose this one.