13.3's to 11.8's to Forget it...

Toying with the thought of chasing my son's Scat Pack, for fun. I figure I'll need high 11's at 113. Trick is, I want to keep the car very streetable and 60 mph a breeze. If I chase him, I will have to spend money, but I'm not going to rob Ft. Knox.
Here is my Duster's current state: '76 Duster, virtually stock 360 (4bbl, headers, and less than 340 camshaft), stock 904 & converter, 2.94's. 26" M/T ET streets. Consistent 13.3's at 99 mph.
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