Can RSB0070-059 use 6ft antenna?

[linhkienbodam]

My 4" antenna radar was broken and I found a 6" good working condition in my local service it was taken from 72nm RSB0072-060. I see a radar motor is difference, my radar motor is RM-8025 but RSB0072 is RM-8367, will RM-8025 can run 6" antenna? please advise. Thank you