Buy Used or New Buggy?

[lucias]

I bought it.. it looks like it was hardly used.. and I can sell some of the nitro stuff and be in it even cheaper.. I am debating on what I should do for a motor..

I already have a 1515 2.5d in my truggy and a 1521 laying on the bench.. I was thinking to save money about swapping the motor and putting the 1515 in the buggy and other in the truggy.. Do you think if I geared it down I would be able to get the same run time in the truggy with the 1521? or would it out of control on a track.. not like I ever am in control. All of my batteries are 5s..