Is there a difference between the different Roto Start 2 Models?
 

I'm planning on getting a Roto Starter for my Savage as right now i'm useing a drill that I don't think is fast enough to start the engine easily. I'm wondering I live in canada so i'm trying to find one here in canada so I don't have to worry about the crazy exchange rate and everything right now.

The Only two I can find are these two different models HPI-87132 (http://www.hpiracing.com/en/part/87132) and HPI-87148 (http://www.hpiracing.com/en/part/87148). I was looking at getting the first one cuz its $20 cheaper but that one says its for the Nitro Star 12/15/18 Engines and mine is the F4.1. Is there an actual difference between the two and would that first one work for my F4.1 engine?