I have the english SS fre flow exhaust.
according to this picture (credit to Jeremy Popp) http://www.deloreanweb.com/uploads/exhaust16.jpg with the UK headers it is still possible to mount the starter heatshield (in the picture I guess there is the original one mounted)

the reason I want the heatshield is because I think it would be a good improvement to protect the 30 years old starter and solenoid against the huge amount of heat generated by the exhaust system..