Suspension Recommendations

I'm looking for recommendations on a front suspension kit for my 72 Demon. I don't have a ton of cash, so no top of the line options will work.
Wanting choices that you've used and you're happy with.
I've been told I should convert to disc brakes in front. Open to opinions and options. I currently have 14", small bolt pattern Rallye wheels and would like to keep them if possible.
Thanks in advance..!
John