[Misfit7734]

Hello all. I just bought that used revo i posted about erlier. its been used 2-3 times and i am payed 150 for it but i am giving back motor gas tank and exhaust. I was told it was a 3.3 but it is actually a 2.5r Are there any differences between the two excluding anything motor related? will it affect my overall brushless conversions finished product? and is it worth less since its not a 3.3? its got a few mods like the almuninum pushrods and such but nuthing crazy