Wouldn't hurt to just give the whole motor a freshening up. Im about to hit 200k and I'm looking at getting brand new heads and I figure since I'm in it I'll do new lifters and rods and every gasket from block up is being replaced along with oil pan gasket. It's getting new timing chain and water pump (going out again) that way I'm good for another 200k and in that time I'll probably be building entire new motor for it. Getting a gtp trans built as well here soon. That's what I'm doing.