New to magnum swaps - opportunity came to me - is it worth it

The story from the seller, the engine was in a Challenger that got wrecked. Car parted out - months(not sure how many) later motor listed for sell (with some other motors and parts - I am assuming the seller is a car and parts reseller for a living)

The performance m1 single plane is interesting. Also, can't really tell in the pictures but the heads looks like newer - fresher paint and freeze plugs than the block