My 01 GTP with the original l67 just rolled 112,000. My mods include an s1x cam, gen v, headers, etc. I am also piecing together a full size IC. Now I'm contemplating on buying heads.. Nothing too serious, maybe some cnc or stg 2 heads with 105's. I'm assuming my 112k bottom end should hold up if tuned correctly? It runs just dandy now.. Just like if not better than it did at 41k miles when I bought it back in early 07... Any thoughts? Should I proceed with the build?