I figured 2 topics would be a waste, so here goes.

I found these a arms in my parts box, and they are thicker than stock, so i put them on. Any good?

And also, is this engine i have any good? I mean if i were to race, would it be competitive?

yes and yes.

why doesnt anyone else have one? And here, i also have these for the rear that im going to put on later.

they are probably from the older models of the GT.

so what, do they use os engines now? O, and how do i get to the brake disc?

i had a old rc10gt tub. its a arms were TINY. never seen those big ones before.

engines? i was talking about the a-arms... O.o

o. and how do i get the brake disc out of the caliper assembly?