What's the problem? 420, 560, whatever, does the car run? It's not like the car is a "classic collectible". Buy the car, don't pay more because it has an "upgraded" engine and THEN figure it out.

A SEC on the other hand is collectible but a SEL? Nice cars but there's a million of them out there. I bought a '85 for $300 (non-running) and Douge bought one up in Phoenix for $600 which he has running.