Picked up a pair of rather scruffy but good sounding Altec 414-8B yesterday for a good price. (based on what I see online) I've admired all of the wonderful Altec systems for years but they were just too rich for my blood until this pair showed up locally on Facebook marketplace. Carefully cleaned as much dust, wood chips, dead bugs etc. as I could off the surrounds. I recently completed some 4+ cu ft boxes for some cheap GRS 15" woofers. (pics below) I really don't want to build another set of boxes. If I made an additional front baffle to mount to the front of the existing box would that work? Should I front mount or rear mount? I see both in online pics. As far as HF goes I'll probably need to go with something economical instead of pursuing the Altec 511, 811, 32 route plus the expense of drivers. You can see my Blanda Bowl/Fostex ff85wk solution in the pics. I've also experimented with Pyle PSD442/Dayton H07E horn driver combo that were decent for not much money. Looking forward to this project. Thanks for any suggestions. Oh, by the way, the GRS 15" I used were not bad sounding, a little boomy. Just hoping to experience some Altec magic.