In a message dated 11/8/01 8:12:08 PM Central Standard Time, malevy@xxxx writes: > The block itself is the same on most if not all of the engines listed. > > Marc, The blocks from all the different versions of the PRV engine are NOT the same. The castings and bosses and bracket locations on the exterior of the block where different "attachments" bolt on vary from make to make. Also the pistons and their matching "wet" sleeves are matched to each block and cannot be interchanged from make to make. You cannot take the sleeves and pistons from a 3.0 liter engine and install them into a 2.8 liter block, or vis versa. Same with the 2.5 liter - 2.7 liter and other variations. Matter of fact, I'm ammazed at how many parts will not interchange from one motor to another within the PRV "family". If you deciede to "swap" another PRV engine into your car, you had better plan on useing most of the parts from the "swaped" engine. Of course it's the same as anything else. If you want to spend enough time and money, you can make just about anything work. Marty [Non-text portions of this message have been removed]