I've been looking and searching for just the right engine to start the build of my 73. Previous owner put in a SBC back in the day. An L83 5.3 plus tranny from a silverado has been presented to me. I know a lot of people go with 2004's thru 2006's. Is a 2017 too new??? I see some people ( maybe on non fi's ) have gone up to 2013. But what is newest 5.3 anyone has used without too much heartache, if any? Do the technology/performance benefits outweigh any issues i might be facing if i tried to go with this 2017?