Not alot of help here. But have you checked the simple stuff yet?
I've had a "jingle" noise before and it was the exhaust clamp (the one that clamps the exhaust to a bracket on the tranny) come loose and it would jingling.
I've heard the dust shields on the tranny flange can come loose and could cause a similar noise. Sorry, that's all I got.
And for fullthrottle, an '82 and "pulling" the top cover, it's going to be an L series tranny.
