YOU SAID:

He had quite a massive rack

INTO JAPANESE

彼はかなり巨大なラックを持っていた

BACK INTO ENGLISH

he had a rather huge rack

INTO JAPANESE

彼はかなり大きなラックを持っていた

BACK INTO ENGLISH

he had a rather large rack

INTO JAPANESE

彼はかなり大きなラックを持っていた

BACK INTO ENGLISH

he had a rather large rack