Is there anybody out there that sells a kit to complete a long block?

I'm thinking about a motor build but don't have a motor to take all the other parts off. Also, I'm not crazy about putting old accessories on a new motor anyway.

Here's a list of what i think i would need, what else?
starter
alternator
sea water pump
water pump or cross-over
fuel /water seperator
oil filter assembly
power steering pump
oil and ps cooler

It seems like this stuff could really add up $$$

wiring harness?