well i like b series but im partial to the d-16 for whatever reason, caught up in the following. would it be a good idea to purchase a used block that has been machiened back to spec and start there? do the work in my garage bit by bit till i have a new motor or would it be prudent to just swap to a b series? i mean, i want to build the d-series but i dont have 10 years to do so. know what i mean? if i do build the d series im gonna make it bomb proof and boost it.