I started a rebuild on my 75 Skylark about 10 years ago, maybe longer. I pulled the olds 260 that was in it and bought a Buick 350. I tore down the 350 and rebuilt it at home probably about 8 years ago. Unfortunately, it has sat like that ever since. The rebuild was finished and the new engine is just dropped onto the motor mounts back in the Skylark not bolted to the mounts and the bell housing is not bolted together either. I have not done anything with the transmission (I believe it is a TH350 but need to verify). It did run, no leaks that I remember but slight shifting issues if I remember correctly, before I pulled the engine. I have a renewed energy about getting this done and getting the Skylark purring again. First big question is: Since I haven't done any of the work to drop the tranny, and finished the engine rebuild, should I just bolt up the tranny and focus on the engine? If I am going to bolt up now, then any "quick" things I can do to the tranny (Front seal?) before I bolt it up to the engine? It has been sitting untouched in the car for at least 10 years. Any tips for the engine since it has been sitting for years too? Any other helpful hints or suggestions are welcomed too since I am jumping back into this rebuild. Thanks all!