Clutch kits aren't that pricing and it's worth the peace of mind - I can't imagine putting everything back in the car only to discover that something wasn't right. I'm in the process of a major rebuild on my 240, replaced everything including the pilot bushing. This bushing is sometimes overlooked because it can be tough to get out. You'll know it's bad by the nasty squeal, but then it's too late. Here's a tip - get a 5/8 bolt or piece of bar stock, one wrap of black electrical tape to make it snug, fill the hole with grease and hit the bolt head sharply - the hydraulic pressure pops out the bushing. Here's a photo, better than an explanation. I hit it about 6 times with a heavy mallet, no need to be gentle.