I bought an engine sight-unseen, on-line, from Cherry Auto, out of Toledo, Ohio a couple of years ago. They offered to ship free and offered also a 90 day money back guarantee.

The engine was delivered on-time, but when I unwrapped the crate, I discovered the valve cover was holed, oil pan holed, engine mounts caked with mud as though they dragged it on the ground before putting it on the crate.

They told me over the phone before I purchased the engine that they ran and tested it, however upon my inspection there was no evidence they ever ran it, in fact, it looked like it had been out in the weather a very long time!

I was pissed, but I realized that the trouble I'd have to go through to return it would be futile, so I swapped oil pan, and valve cover from the dean engine and put it in the car and the engine ran like silk and with no problems.

Since you are in New Jersey, I would look into Potomac German down in Maryland. They, I believe have a good reputation. I see they have two 606's for sale, and they offer a guarantee.

Good luck with whatever you end up doing........BB