Will a Isuzu transmission 5 speed fit 283?

It is unlikely that an Isuzu transmission will fit a 283 engine without significant modifications. The 283 is a small block Chevrolet engine, while Isuzu is a Japanese automaker. The bolt patterns and dimensions of the Isuzu transmission and the 283 engine are likely to be different, making it difficult or impossible to mate them together. Additionally, the Isuzu transmission may not have the correct gear ratios or torque capacity to handle the power output of the 283 engine. It would be best to consult with a qualified mechanic or transmission specialist to determine if an Isuzu transmission can be successfully mated to a 283 engine.