Ok, I got the MM6's and the MMC460's in the truck yesterday. This combination was almost a perfect fit.
The only cutting I had to do was cut small pieces out so the spring nuts would fit. In the front doors they roll the edges of the speaker hole to add rigidity. So I had to remove the rolled edge in four spots so the spring clips would slide on. In the back I just needed to enlarge the hole a little. The tweeters do fit in the spot the factory tweeters were at, but thereís a huge gap around it, so I need to get some plastic sheet to cover that hole and remount the tweeter later. I pointed the tweeters up and it sounded great.
I forgot just how good the Polks sound. Even running off the deck "22rms" I was surprised at how tight the MM6's were in the bass and mid bass area. The mid's were just as impressive. The highs I set to -3 on the crossover and it was perfect. I cannot wait to get 150watts with the TU-600 on these.
The MMC460's in the rear put off some nice high bass as well. Very impressive for such a small speaker.
I was able to speak with a techie at US Amps about wire and fuses. He told me with my combination of amps "TU-600, USA-200x, USA-600x" 4g from the battery to the distribution block would be more then enough, 0g would be like using a tank for gopher hunting. :) Fuses he suggested 80amp for the 600x, 60amp for the TU-600, and 20amp for the 200x, and a 150amp ANL fuse at the battery. I'm going to run a 1-farad cap to clean up the power, and Iíve got a 3way Maxi fuse block to hold the fuses.
The MM124 and 600x should be here tomorrow, but Iíve been lazy this week on building the box. I was thinking about using some 3/4" cabinet grade birch plywood as was discussed in the other thread, but I will probably build it from MDF first "MDF is tons cheaper, if I mess up" then Iíll have both boxes later on and I can do a compare and contrast.
Thanks again guys for all your help.