truck is coming along great it looks like, except for that hub carrier/castor block issue, very strange indeed.
i would be very curious the construction quality of the Integy unit for this specific piece, especially only being at around 6$ a set. their products definitely end up on very opposite...
yikes thats not good, and those holes definitely not factory, looks like someone tried their own B/L conversion? see alot of people using a piece of metal in the shape of an L and bolt it to where the factory engine mounts are, at least they semi decent, dont have the weird "wandering slot" look...
think i like the stock better, its weird where bodies have gone to in appearance, i remember when "Race" bodies were like the RC10GT and DTX evader, TRX Rustler etc, now its all robotic looking lol.
i know in the past i kind of fabbed up my own body posts, using existing holes in the shock tower and a washer/nut on the back side, idk if this would be possible for you though.