Ahhh now we are getting somewhere, the N/A has the E32 version which is already stroked (according to reference Mercedes-Benz M112 engine - Wikipedia, the free encyclopedia ). Seeing as I am learning like the grasshopper of Kung-Fu, is there any differences in the 3.2L stock N/A that would require a different version of the motor? I guess you can re-stroke (so to speak) unless there is too much already modified internally requiring a replacement plus associated. In other words can OUR E32 be re-stroked successfully, or will another version have to be dropped in? Also reading the wiki page, I remember quite a while ago folks debating how different the N/A vs the SRT blocks (lower end) were different, was that ever resolved or are the the same blocks with just slightly differently heads and of course the intake manifold/supercharger?