The stroker kits are pretty much a wash. Reconditioned rods or aftermarket are the same price for either way you go. Machine work for a Teen is no more or less than a 340 or 360 block. Heads can cost more depending which way you go and how strong of a combination you are building but Teen, 340, or 360, iron or aluminum. They cost what you do to them. See where I am going here? If a 318 is free and a 360 cost $500 and a 340 is $1000 that's where the cost savings comes in. Strokers aren't cheap to build even if your block is free. A standard small block overhaul isn't cheap if done right.