Welcome aboard
You should ridge ream to remove the ridge. Chances are you won't get the pistons out very easily without it,there is a chance of breaking a ring land I can't say without seeing the ridge.It is fairly basic job to do but you should have some help from someone who knows the correct way to set up the ridge reamer before starting,as you can create some irreparable damage from a botched up job. Some of your buddies or their dads will be able to help if not ask here before you plunge in to the world of fixing old engines and repairing. The reward of having done a fair amount of work yourself and having gained some knowledge is fun thing. "Once again Welcome"
Ronnie
