94.5 hp was the rated amount for a 1980 B-code manual, but it varied from 87 to 94.5 nominal 1980 thru to 1983, with any number of ratings between 87 and 94.5.
Torque was the same or up to 6 lb-ft more, at less rpm, depending on year.
In addition, Ford at some stage had to detox the engine for manual gearboxes, while some areas didn't have that option. Even when Ford retarded and played with the camshaft, the result was still more power and more torque with this exhaust in an era where there was now a mandatory air pump, and secondary AIR in CA models. The 1980 B code model had 9.5 hp extra over the 1979. Then it varied according to other changes in 1981, 1982, and 1983, but always more than 85 hp by 3 to 7 hospower. Rated torque was often up despite the variances.
http://fordsix.com//viewtopic.php?f=...573043#p573043
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