Savage X specific questions

I know i know. but after hearing about all i would need to buy last night... the thought of brushless made my wallet crindge. and I don't really want to do the HW/china setup. I have seen some buku pipes and LRP's do almost standstill backflips. Enough to throw it on it's lid. That is nothing against brushless power, and i know that. But $100 just to get the truck BL ready, then $240 motor/esc, then a $100 lipo. That's $440... into a truck that cost me $250. And even at that cost, I am only getting 15 maybe 20 minute runtimes.

Another question --- I need a screw kit. RC screwz sells them. They have a savage X kit, and a X 4.6. Since i am trying to get my truck to Flux specs, but even better, can i just buy a 4.6 kit? Only a couple screws are different, right?