This is why you get a os .18 tz it has a dyno 2.28 hp and 5 ports and you can find it for $165.00 the rb v12 is $325.00 and has 3 ports find me a dyno i dont se how it can have more power a highly modded 3 port and 30% smaller i t can have more power hope it would for $325 but i just dont think it will top 2.28 hp