You are right this is not the same body as used by Blaton.
But the body's are interchangable (and available) and it looks like the Blaton roll hoop, which was extended for safety.
You can see a picture of one the Blaton chassis on our web pages:-
http://homepage.mac.com/foxmotorsport/PhotoAlbum19.html
I remember the team having at one point a 290 chassis which was converted by Heine Mader to DFV.
This car was advertised in Autosport 5 ish years ago as a T280, I went to see the car at Empress racing.
It was in a very original condition but definatly not a 280, also the chassis plate was an original Lola plate which had been stamped by Mader, So it was not unusual for Lola to give plates to Mader!
CF