AoA, Good day, I need an expert opinion. I have an Audi 5000 model (1981). I have swapped the original engine with a Toyota engine, due to some technical troubles. The gear box is of original Audi. It is a 4 speed box but some time ago it has started jamming reverse gear, as the car won't go into reverse. I was thinking to change the gear box. The mechanic said we will have to change the direction of the engine (foundation and other expenses) and rear wheel gears are not available in market. I am tight on budget, please advice if the above information of mechanic holds or not, if not where should i get this work done from (An cost efficient expert in Karachi). Will much appreciate the help. Regards. Thank you in advance.