You can use British SU carb insulators which are available from aptfast.com. Here is a link: aptfast su carb parts They look a little different and the thickness may not be the same but they should work. I am 100% sure the HS4 type have the same dimensions (bore and bolt pattern), maybe H4 also. They should be the same size but I woudl double check with aptfast about that. The H4 ones they sell look nicer. Here's a picture:



If you can't order direct I would be happy to give you hand americo. I'm glad you finally found your carbs!
Michael

im in troble here.

i cant find the insulators for the su intake manifold.

Can i use something else? any ideas?

thanks
americo