if your on a budget go with the 5port race stock is plenty for a truggy....i ran a PTM go .25 in a hyper st pro ....very good also but the 5port stock in my opinion is the best bang for the $ for a truggy put an 086pipe and if u truely need more punch on short tracks go down a tooth on clutch bell ....
if u wanna pay more, both are great modded motors