That's an onroad engine, I think it would work well in an ST though. It comes with a pilot shaft though, which won't work with your clutch. 5 Ports isn't race leagal for stadium truck racing, although some tracks will allow it. With that money though, you can buy your self a nice .18 engine which you will have WAY more fun with. The only upside to the 5 port TZ would be the longer run times. I wouldn't buy it, too much money... I can buy a $130 SH .12 engine and have it ported for under 60 bucks and it would kill that TZ