I made a pair of 6" speaker cans out of PVC the other day. I used SCH. 40 caps and couplings. Just glued them together with a few slices of pipe. I ordered the cheapo waterproof speakers and amp by Pyle from amazon. Paid $66.99 for the speakers and amp. The amp is model #PLMRMP1A. It includes a volume knob and MP3 jack which will be mounted on the dash. I plan to mount the amp up high behind the drivers seat, then run the power from the fuse block to a toggle in the dash, then to the amp. I fitted the cans to the cage with 2-2" u bolts/can. Although I ordered the speakers/amp over a week ago, the vendor has not yet shipped them. I'm expecting them to be here by the middle of next week. I picked up a spray can of Krylon Fusion black paint which will cover the cans once the speakers are fitted. The u-bolts will be sheathed with black flexible tubing. I'll post more pics of the install next week.