I did buy a new set of cranks, but the sprockets didn't fit correctly with the front derailleur. The front derailleur on the older Raleigh M-30 i connected to the bottom bracket. Therefore, if I were to use the new crank, I would need to remove the front derailleur and replace it. Probably replace the chain as well. I'm not willing to spend a lot of money on the bike because
1. It's not mine any more.
2. I don't have a lot of money to spend.
I will just wait and see what it looks like when I get home tonight.