He Guys I Finally Got My Rex And My Ls Block B18a1 And I Am Going Turbo I Have It All Apart And This Will Be My First Build So I Am Going To Build It With New Piston And Rod The Ones That I Was Thinkin Of Are Either Wisco Or Cp Dont Know Yet Since I Have It All Apart Will I Have To Machine It Or Anything And It Is Going To Be Stock Bore Which Is 81mm Can I Just Put It In Or Will I Need To Do Anything The Rods Are Eagle Rods My Goal Is 19psi When I Want To Go But Around Town 4to 6psi