Well then I'll tell you this much that engine was one of the last engines to be build by TMD but I can't 100% say it was as I'm not sure if it was 4e or 5e when it left us. It was a few years ago now to be honest and if I'm right it's running an old td04/05 mild steel turbo kit (one of race-techs old kits of I'm right) engine pulled very well when it was done but I'm sure it only ever had a running in map on a uni chip+ hope that helps. If it's any credit the guy that had all the work done was a nightwear he wanted 400bhp for about £3.50.