Tony, it's possible to pull the cluster out and totally bend the speedo cable housing. The cluster is about 8 to 10 inches deep. Just look at it this way. Time is cheap meaning doing it the right way takes longer. Haste makes waste meaning trying to pull the cluster w/o releasing the speedo cable first may set you for a unnecessary and not inexpensive speedo housing replacement. It's only a little bulb, take the time and do it once only. Good Luck..
1987 BMW 325