... someone, based on your info, needs to tell Rock Auto that they don't need to sell timing chains ...
Rock Auto has been a great source of parts for me as well, but they
do make that same mistake pretty often; in example, the Subaru
EA81 Boxer engine that I mentioned above, is a 1.8L H4 engine that was offered in certain Subarus since 1979 to 1994, and parallel to that engine; subaru offered the
EA82, which also is a Boxer, 1.8L engine, BUT the EA82 came with two timing belts, one per each head. The EA82 was offered from late 1984 to Late 1994, so both 1.8L boxer engines were available side by side during several years.
Despite that the EA81 is an OHV engine, and the EA82 is an SOHC engine; the many similitudes between them, such like both of same displacement, both were offered carbureted and MPFi Turbo, both had Hydraulic Lifters, etc... makes them to think that the EA81 and the EA82 is the same engine; Rock Auto sells Timing Belts for the EA81, which doesn't use them.
Same happens with the in-line six cylinder Ford engines, not all are built the same way.
I hope that you understand that the parts' stores are not Perfect, nor the Software they use; in example, the Kia Dealers always offers the internal C.V. joint's boots for the Manual Transmission Models, for the Manual and Automatic models of the second gen Kia Sephia, the same error is found on the Software used by NAPA auto parts; but the boot for the Automatic, is very different in design and dimensions, than the Manual counterpart.
... your going to have to show me a picture of that engine with a direct drive set up...
Finally, here are the Photos you asked for, Kind Regards.