Questions about DIY Driveshaft Removal/Installation '91 Civic

One more follow up tonight. I looked through the engine compartment at
where the current shafts meet the tranny. The way I described how the
uneven surfaces on the largest diameter part of the ends of the shafts
end on one shaft and go to a perfect circle before the tapering
(right-short) and go all the way to the tapering (left-long) seem to
match the replacement shafts. Granted I was peering down at night with a
flashlight (hard to see the left shaft).

Mark