The 6A13TT engine is almost identical to the 6A12 Mivec engine, Ive used the 6A12 wiring loom to wire up my 6A13TT engine, I wonder if it would be possible to put a MIVEC head on the 6A13TT ? It gives an extra 20bhp on an FTO....just a thought, I may look into it further next year.