Exhaust questions

[chrisb01440]

Well I just swapped the engine in my 80 brat to get her mobile. It originally had a 1.6 ea71 with a broken crank. She came with a spare engine, another 1.6, but shes alive and I can get her in the garage and on the lift. I ordered the weber carb yesterday, and now im wondering about the exhaust....... Are the 1.6's narrower?? I guess what im asking is do I have to stick with the earlier exhaust or can I go with a newer one. Im not looking for performance upgrade just easier to find the parts.