moustache bar bolt sizes??

[Whitey82]

Fitting my engine in a couple of weeks and struggling to get hold of the bolts for the engine support bar, does anyone know what size and thread they are so i can try local wholesalers? its for an early bay "moustache" style bar and il need to get the relevant bolts/nuts for the ends to fit to body and the middle where they go into the engine casing. hope somesome can help, cheers