I've got an 8" un my 67 coupe I've ran 13.02 at 104.5 with a set of et streets on mine. On a website called
http://fordmuscle.com
they have a 67 coupe that was running 12.20's with a 5 speed,slicks, and 5000rpm launches and theirs finally broke an axle. They replaced the broken axle and have ran an 11.9? something with it.
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91LX bbk shorties,bbk off-road pipe and
67 Coupe, 302, with TFS heads,13.21@ 104 on street tires