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So the groove will be on the "face" of the damper facing the pulley?



Yes.

Quote:

So the converter out of the donor truck would work??



Before we know whether the converter will work or not, find out what engine/transmission you have in the donor truck. Depending on the engine, it could be an A-518 OD, an A-500 OD, a 727 or a 900 series. The donor converter is probably a lockup style which won't work if your 1978 727 is non-lockup. If the transmission in the donor truck is an A-500 or 904 series, it won't work with the 1978 727 either.