Jeez just because the block id the same don't make it the same engine, look at the automotive world, the chevvy v8 blocks and the rover v8 block have been used by many different companies yet some make 200bhp some make 1000bhp. The sleeve design and timing are what makes these things work a slight difference here can make masses of difference. Would I be right in saying that out of the golden lion blocked engines the LRP spec 3 is the most powerfull? would be cool to see a list comparing the different engines as some are harder to find in the UK and others are cheap and easy to find.