1515 vs 1521 in a LST???

[lincpimp]

Thanks for all of the info. I am currently saving for a 1521, but I will try the hacker c50 11xl first. Almost done with the lst motor mount, just need to make the battery tray and wire it up.

Now, another question... I acquired a neu 6s 3900 20c lipo. So it is good for about 80 amps cont. Would like to run my hyper st truggy with a MMM and this lipo. What would be the best neu to do this? I am leaning toward a 1515 2.5d... Or should I go to a 1512? It is atruggy, but I plan to run mtr tires with dish wheels, to keep the weight down. And it will be geared for 40mph. Or should I stick the hacker c50 11xl in it and just buy a 1521 for the lst???

Too many decisions!!!