The block itself is the same on most if not all of the engines listed. The engine "cradle" is unique on the DeLorean (it may be the same on the Alpine, but I don't know for sure) which is where the engine mounts bolt in. The earlier versions of the PRV (like the DMC) are odd fire, where the later ones (like the Eagle) are even fire. With that, the crankshafts and cam shafts are not the same. I do think any of the PRV heads will bolt on to any PRV block, but the fire order will be dictated by the heads you choose and the crank should come from the same "donor". The intakes are likely not interchangeable between heads. I cant verify this, but it is a good bet they are not the same. Also note that the displacement is not always the same. I am told some blocks can be modified to fit the larger piston liners. Again, I have never tried this. My information is all theoretical. There may be others on the list that have tried some of these things. I think it would be better if you explain what you are trying to do. That may be a better way for the rest of the group to help you. Are you looking for more performance? Replace a blown motor? Doing a book report? :) -----Original Message----- From: pbmain@xxxx [mailto:pbmain@xxxx] Sent: Thursday, November 08, 2001 12:23 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: Re: [DML] What other cars used the PRV-V6 Mark, (or anyone else) Do you know what some of the interchangable/noninterchangable parts were? Pete