My 87' k-5 has recently been sitting at the garage due to a cracked block. Pulled the motor and saw the crack between 2-4 cylender, head gasket was really bad but heads were still good. I recently stripped it down to a bare block and saved everything. Found another bare 350 5.7 block that i bought for $100. Now my problem is that it is out of a 76 C-10 pickup. Some people tell me i wont be able to use anything from my old motor, like my heads, intake, distributor,cam or crank. The only difference i could find in my manual was the intake and exhaust lobes. The newer is about .01 less than the older. I want to buy a Master Rebuil Kit, but i don't want to have to buy new heads and intake when mine are fine. If anyone has any experience with this please help.