By 1969 the S-code 390 was a big-block in limbo. King of the Mustang hill when it debuted for 1967, the 390 4V began a precipitous slide into obscurity once the 428 Cobra Jet swaggered onto the scene in the spring of 1968. Sure, the 1969-vintage 320hp S-code was no slouch: It thumped out off-idle torque in spades and was an inexpensive step up for those who couldn’t warm to the idea of having a mere small-block underhood. Trouble was, the Q-code Cobra Jet cost just a few bucks more, and for that additional investment a buyer was rewarded with the panache of packing 428 ci.
When all was tallied up, only around 3.5 percent of the nearly 300,000 1969 Mustangs built carried an S in their VIN’s fifth spot. Nick Glowacki’s featured convertible was one of them, though admittedly it didn’t look much like this after trundling off the Dearborn assembly line back in mid-July 1969. Shipped across the border, this big-block ragtop was delivered (from Northtown Ford Sales in Toronto, Ontario) in code-I Lime Gold Metallic paired with a code-2A standard black interior. The C6 automatic fed the FE’s prodigious torque to a 3.00:1 open differential on the way to skinny E78x14 rubber capped with full wheel covers, making it fairly obvious that this was ordered more as a cruiser than road warrior. Still, it was an uncommon combo: reportedly only 252 Mustang convertibles came stuffed with a 390 in 1969, of which 146 were teamed with a C6 auto.
In 1999, Glowacki’s became the seventh name on this Mustang’s chain of title, all because of a for-sale flyer the previous owner had placed in his 1970 428CJ Mach 1 at a London, Ontario, car show. Glowacki, who admits to having owned 15 1969 or 1970 Mustangs over the years—seven of which were CJs or SCJs—was aware of the overall rarity of 1969 S-codes and decided to buy what was basically a tired rolling chassis for $2,000. And yes, it was in abysmal shape, having contended with not just decades of an inhospitable Ontario climate, but also a stint as a drag racer beginning in the mid 1970s. When acquired, Glowacki’s ragtop was painted banana-yellow with extensive airbrushing on the hood and was lettered up as the “Widowmaker.” Gutted, rusty, and with poorly flared rear wheelwell lips, this would become a long-term project.
Glowacki didn’t even drag the carcass home until 2002, the previous owner having agreed to store it for the intervening three years. The convertible remained in Glowacki’s own storage for another four years while he acquired a stack of necessary parts, including a period-correct 390 sourced from Quebec and a proper, 1969-vintage S-code intake out of Columbus, Ohio.












