I am looking to buy some NOS carb bodies. Besides the vents, horizontal vs L shaped, are there other known distinctions? I can see some casting differences in 3 #1 carbs particularly in the area where the float bowl retainer clip attaches to the body. On 1 body, there is only the boss where the clip attaches. On another, there is an extra boss with no hole toward the front. On yet another, there are 2 extra bosses without holes, 1 in front and 1 in back of the attachment boss. I cannot find any casting numbers and am unable to get pictures unless I buy them. Were there different bodies on the SC's? Does anyone know which version is correct for the SC?
Thanks in advance for any help or comments, Keith