If youre using the roiginal Evo5 gearbox, this gearbox already has double syncros. However if youre having difficulty in shifting, you may need to change to a different oil, if that doesnt solvethe problem, you may need new syncros. Please contact me if you need more assistance.
Yesterday my engine blown. Early symptom was the exhaust sound become louder. After several time over red line, Out of a sudden the rpm dropped and whole car shaking. Unable to push more than 3k rpm.