yea not knowing the setup of the x-cellerator can't say if you can even strap a big block in
SOME 1/10ths its relatively easy it would literally just bolt straight in with the rght mount, some it can't be done period.

but IMO all that engine would do is destroy the drive chain and drink tons of gas on that truck. Most 1/10ths that can take them need hardened gears installed to handle the big blocks cause the stocks shatter under the stress.