78cobra

So I asked a similar question here earlier before the winter. Now that the winter is coming to a close (although it is snowing right now) I have got some primer work done in the engine compartment and it's getting to the point of buying an engine.
So far I know I need a front sump oil pan, headman longtube headers, and specific engine mounts and a bell housing.

For the mounts I found some at summit racing for 11$ but I have never heard anyone speak of them. any ideas if they work? Also someone said to use V6 frame mounts and early 302 mustang engine mounts?

For the bell housing it appears I am going to need one for a 157 tooth flexplate but I saw something about engine imbalance differences???

I sort of understand what I need but i'm asking to see if I can get solid direct answers from people with experience and greater knowledge.

Thanks to all to who respond in advance. I can't wait to get this on the street!