I know this isn't the best place to ask this question but you guys have always come through for me in the past so here we go. I am getting a two s-10 blazers one is an auto with a junk tranny and no title the other is a 5spd with a junk motor and a good title. My plan of course is to pull the 2.8 out of the auto truck and put it in the 5spd. My question is are these both externally balanced or is one internally balanced. I have been told this may be the case. If so what can I do about a flywheel? PS these are both 1985 trucks.