YOU SAID:

... I am confident you will make a fine replacement.

INTO JAPANESE

...私は確信して良い交換を行います。

BACK INTO ENGLISH

... I was sure that good exchange.

INTO JAPANESE

...私はその良い交換を確認されました。

BACK INTO ENGLISH

... I confirmed the Exchange.

INTO JAPANESE

...私は交換を確認しました。

BACK INTO ENGLISH

... I confirmed the Exchange.