LS motor mount advise

[ltaylo91]

Not sure where to begin so here it goes. I have a LM7 in a 72 frame. I used Hooker plate adapter and the trucks original mounts/stands (not sure what they are called). Now I am trying to put a cast iron turbo log manifold (listed on eBay for a Silverado) and it looks like the motor is too low in the frame to clear the frame rails. My questions are:
will other motor mount systems out there mount the motor higher?
Has anyone on here used the cast iron turbo manifold off eBay?
Here are some pics of what I have.