Hi
I was looking for a MVVS head gskt. An OS FP 40 head gskt was the same size. You might try an OS 1.08 head gskt. You can still get them.
This is a Replacement Gasket Set for the O.S. 108FSR(BX-1) Engine.
SPECS: Head Gasket:
I.D.:29.1(1.148")
O.D.:35.4(1.396")
Thick: 0.3(0.013")
http://www3.towerhobbies.com/cgi-bin...?&I=LXCM88&P=7
Vince