Ed i broke the key way in the 3.8 and used my spare short block 4.1 while the 3.8 was being rebuilt. I always keep a short ready due to the fact i do not like to be down, i transfer the top of the engine from one to another and i am up and running within a week. My son is AWESOME he is the one that puts the car together and tunes it, i am his gopher.Dad go for this, dad go for that. It's funny what time does the dad becomes the child and the child become the BOSS but i am not complaining. We drink a beer and have a ball, life is good.