Engine rebuild choices

Most bang for the buck, go with a magnum motor (318 or 360, which kills me to say because I prefer the LA block over magnum).

The problem with that is, I have a perfectly good motor now, I dont want to spend the money to get a new motor, then have to recuperate that cost by selling a motor thats difficult to get any money for.

It would be better to have a magnum, but im simply not willing to go with that kind of cost and effort to buy and build one.

I do appreciate the input though, thanks.