I recently bought a engine r5 from Arrington auction. It was there display in the showroom. I was hoping it was going to be complete inside but was not. I've since bought another engine that was running to get most of the missing parts. I took a head off the showroom engine today to see what I got. I was kind of surprised to find a block with a solid deck. Every picture that I've seen of r5s has a open deck except for one that I seen that Weston filled with a plug. What did I buy?