I made custom mdf mounts, look simular to the ones in the link, only diff is I put a slight angle on them to bring the sound stage up to a higher level for the mid bass. Easy to build them, I only spent about 2.5 hours for all four of them and used scrap mdf I had laying around, I do custom installs and speaker boxes for a living.

 

Yea it shouldent be too bad to make the mounts out of mdf.

 

6.5 component kickers SS all the way around w/ 4ch amp 2 8" Kicker L7 w/2ch mono block and 1 12" Kicker Solo X w/ 1ch Mono Block.........

 

I made custom MDF mounts with Kicker QS 6.5. JL 10w7 in trunk in custom sealed enclosure.