truck enclosures

https://soundsgoodstereo.com/collections/custom-subwoofer-enclosures Stage 3 Enclosure (mtiacoustics.net) Silverado 1500/HD Crew Cab (mtiacoustics.net) PLEASE ADD TO THIS LIST

I have a 2003 ram 3500, looking at a prefab enclosure http://www.foxacoustics.com/ProductDetails.asp?ProductCode=DQC-212-V 1.55ft3 ported tuned for 35hz I know this is probably not the best enclosure(or could be), but I have to conserve space.. The page says type R's fit, but do you guys know of...

I have a 2007 Silverado Ext Cab (new body). Im going to attempt and build a fiberglass box and fit 2 JL 10W3v3's. I have no idea how I would go about making two chambers with a fiberglass box. Will it be ok if I put both in the same box sharing the same air space? if so, each sub needs .625...