If I'm understanding your description, you may want to take a look at the R129 SL strut mounts which bolt in but may touch the underside of the hood.
Here's the standard mount:
And here's the R129/4-matic mount:
It might be better to use the R129 mount and space it down instead of mounting the entire mount above the tower with spacers. JMHO.
Also, note that the R129 mount has an additional bracket that goes above as a safety measure to protect the hood should the mount fail.
