Edited your posts, Darrell.
here is an info about X-310;
Mr. Pierre Renoux designed before leaving the SNACSE company,a seven helicopter projects,they are X-310A,B,C,D,E,F and G,the X-310G equipped with a turbine Atrouste engine,andredesigned as SE.3130.
Also an info about X-316;
X-316 was a twenty three seat commercial and military transport helicopter project of 1955.