Anyone ever use MTX thunderform enclosures

[05caddyext]

I just got an 05 dodge ram quad cab and am looking at adding subs. I have a JL audio 500/1v2 amp id like to use. I see that mtx makes an enclosure that built for this truck. Anyone have one? Anyone think I could get a box built with subs for what they ask for the loaded enclosure? 10" 4500 mtx subs with the enclosure. $450 to buy it. Any info is appreciated.

[lotsals1]

The thunderforms are nice for this truck--my buddy has one.
The mtx box is far lighter than any you could build.They sound nice too.
4500's though suck---he put jL in his