Need a driveshaft now

I am ready now to find a driveshaft but need to know what donor would be the best to fit the 80 Camaro 10 Bolt rear and match the 700R4 tranny. If something will match I will save having to buy new yokes.
Also, it will need to be longer than 67". Any suggestion will be considered helpful.
Or would it be better to just by a new shaft at the driveshaft place?

I heard there is a universal that is 2 sizes . One side will mattch drive shaft and the other will connect to rearend. The name i believe is mechanics universal . I havn't did the research yet but could be a good lead .