thats why there is an obo. this is a 100 percent reliable full swap. mounts, harness, distributor, intake manifold, axles EVERYTHING. When i droped it i replaced all the seals and gaskets. Then i only drove it for less than 10,000 miles. Like i said i ran 2 10.3 runs with this motor in my Eg. I'll even do the swap myself so that if theres any problems im the one to blame.