clunk underneath on 1997 Toyota 4Runner

When i come to a moderate stop and then let off the brake their is a noticeable clunk. U joints are tight, tranny tailpiece is tight. Anyone ever had or heard of the problem?

Asked by for the 1997 Toyota 4Runner
could be the trans mount that is broken and the trans is coming down after tension is off the power train.

Thanks for responding, had vehicle on a lift once while it was running in gear wiih the brake on and hitting the throttle in drive and reverse and everything seemed tight. Might have to check again.
2 more answers , 2 more comments
I just bought my collage kid one of these and there's a recall on the rear suspension:
RepairPal Expert Overview:

Toyota has recalled 1996-1998 4Runner trucks because when they are loaded down fully, steering response and handling may be compromised, which can cause a loss of vehicle control. Dealers will replace the rear suspension parts.

But I would have a shop double check those u-joints especially the rear one
thanks for input will have them checked again.
Engine or trans mount...
Will check engine mounts. I dont feel it while rolling down the road . getting on and off the gas. Normally you should feel a broken one that way, but will have them checked out.