[DML] Strange noise & idles Rough

[Comet42483@xxxx]

I recently bought an 81, and when I go around a corner, sometimes there is a 
Clunk in the engine compartment. Any ideas as to what it is? 
Also when I first start the car it idles roughly down at around 500 Rpm's 
but after its warm it runs great. Is there a way to adjust it?