Conversation so far:
what happened to niki lauda in 1974?
Ferrari regrouped completely under Luca di Montezemolo and were resurgent in 1974.
what did they do in 1974?
CANNOTANSWER.
what happened after they regrouped?
The 1975 F1 season started slowly for Lauda; after no better than a fifth-place.

Question: who did he work with?
Self-contained rewrite: Who did Niki Lauda work with?