I have a 1980 BRAT the engine has run sand through the carb and im assuming also the engine and the 4spd does not work for what I am looking to do with this car I found a 1989 GL that has every part I was going to try and swap into my BRAT engine, trans, rear dif, transfer case, and seats besides the seats what work will need to be done to swap over the whole or close to whole drive train? is it plug and play or am I going to need to bust out the welder and fabricobble some mounts or is this swap completely not doable I have never done or tried to do anything like this with a car the closest was helping with a 305 swap into a ventura with no front end and the mounts were fabricobbled by someone else who had done it before.