OK kinda confused with is i need a new timing belt and Gaskets but for the applications for the timing belt i dont no what to choose i have B18a bottom block with a 95 gsr head now what kinda timing belt application should i get. b18 oem timing belt or b18c oem timing belt.

ALso i need new top end head gaskets should i get the b18a oem gaskets or b18c1 oem top end gaskets but the thing is are the Cylinder bores the same for a LS/GSR which is 81mm. sorry for the dumb questions i would like some answers thanks.