The answer is YES!!!
The FSM is far better than the Haynes/Chiltons/Clymer, ect... in fact those rags just plain SUCK when compared to the FSM!
The reason the cd-rom FSM is $70.00 and not the usual $49.00 is the '76 year FSM is text searchable.
Believe me, it is well worth the money... if not just for the FI troubleshooting info (in the engine fuel section) and the electrical diagrams for ALL the electrial harnesses (body electric section). Try to find that info in any of the above mentioned books! In fact, the only info on the FI systems is in a supplement at the end of those rags.
$70.00 is really not alot to spend, considering the info the FSM has.
If you can get a copy of the Ztherapy FI tune up video, pick that up too from Courtsey Nissan.