I'm glad i ran across this page, just picked up a 77 matic, quick carb job and shes up and running. still dont know what i'm doing with it yet, still got the 74 and 78 ss to get around to. Is there any real demand on these? or should i just use it for parts for the others? I originally thought cafe, but that tank is too big and bulky for cafe in my opinion. Would other year tanks bolt on like say a 71? thanks.