How to make sure that the engine will fit.

Are all b16a able to drop in the the 90-93 tegs without a mount kit? What are the pw0 and pw03 things? Types of ecu’s?

yes, all b series motors drop right in. You just use the existing mounts on your old motor and in the car.

yes, pw0 and pr3 are the types of ecu’s that come with the 1st gen b16a.

Go to the teg tips and download the Vtec Engine swap guide…its got the answers to these questions and more. good luck.