That's probably out of a mark vi or vii (if it's an h.o. mk vii). Mark ivs came with 460s. Is it still in the car - can you hear/see it running? Why are they parting it out - rust, wreck, mechanical issues? Are they including the fuel injection system - engine harness, ecu...? As far as the fit - no problem although I'm not sure about the belt and pulleys - you could end up with clearance issues or working around the ac bits (not a big deal). The block itself will bolt in. the harmonic balancer and flex plate will be a different weight than the EB 50 oz vs. eb 28 oz. Mix n match will shorten the engine life. Other than minor stuff - it's a perfectly decent 5.0 - rated at about 225 hp. Condition is key. Even in great shape, IMO I wouldn't pay much. Our local pick n pull is loaded with lincolns. Can pick up any 5.0 for $79.