Both engines arrieved timely to my home door, well packed and undamaged. For my craftman yardman 3000, I installed the briggs 23 hp but had to find bolts at Jerry home improvement, and rob longer excellerator cables from an old mower was expected, electrically it plugged right up. The 19 hp 540 cc had new mounting bolts included which helped due to engine mount holes were unthreaded, plug didn't match so the wiring instructions included helped there. One issue was on the 19 hp single cylender right out of the box it had no spark once wired. I check the magneito and it was out of ajustment at 15 & 20 thousands, I didn't think to check if it was bad, I just swapped in my old motor magneito set it at 11 thousands and it had spark then started right up. Obviously, this was a manufacture issue not a seller issue. I'm very happy, and I will order from you again at some point. Thank you again!