My '66 289 Mustang convertible would run the quarter in 15.13. Not bad for an old small block. 456 posi ... Jardine Headers hooked to sidewinders, 3/4 grind solid lifter cam, 720 cfm double pumper Holly, The four speed tranny came out of a big block boss ... interesting converter to make that happen, high dome TRW pistons and milled heads with oversized valves ... Edelbrock high rise manifold ... No fancy paint job .. after all of those parts there wasn't even enough left over for Earl Scheib.
Not that much of a mechanic ... but I could buy the beer and hand wrenches. Of course, those were the days when all you needed to pull an engine was the Ford utility tractor with the manure loader on .. and a log chain.
Best clocked time, at Anita Raceway .. where "Sunday is Funday" was 15.13. But, I know that I'd run 'er faster at other times (or so I like to think).
All drunked up and wrapped that sweetheart around a bridge.