kierondt50mx

Hi, I'm new to the site and I was wondering if anyone could help me? I have a dt50mx and the front forks seem to be operating incorrectly I think they may be bent therefore was thinking of getting a front end off another/newer bike and preferably get a disc brake rather than the standard drum. I'm wanting to keep the look of the bike as much as possible. Does anyone know if any other front end will fit my bike. The forks I need seem to be impossible to find in good condition thank you in advance for any help