Okay, i got my tranny rebuilt about a year ago. The guy that did it rebuilt it pretty strong useing borg warner bands and trans go reprogramming kit. Now my car shifts at 2000 rpms under normal throttle. Which doesn't bother me. BUT...after a while i can hear a clink type sound. Could my u-joints have gone out already? They are the forged non-greaseable type. I would hope it to not be my tranny mount as it was replaced (at least i hope, the guy is reputable)... any idea's?

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes