With the '94 and '95 540, you have to watch out for the Nikasil short block.
See:
http://www.koalamotorsport.com/tech/...shortblock.htm
You really have to get under the car to see it, and you'll need a flashlight even in daylight. There's a wire bundle that can get in the way, too, so it might be handy to have a pen or knife you can use to stick up there and push the bundle out of the way.