Vintage Cars: 1983 Mercedes 380SL, acc system, maintenance history

Question
I am going to look at a 1983 Mercedes 380SL to buy.  The timing chain has already been converted to double row timing.  It has new rear axels.  Is there anything else I should look for, or any other concerns I should consider?  Thanks, Dean

Answer
as always , look for rust in jack points, pull carpets and look there as well as trunk
pervious maintenance history is a plus
BIG ISSUE - make sure all air and heat controls work.  THis has the dreaded servo for the ACC system
how many miles?  how recent were the injectors serviced

generally good car if above is sorted out.