I'm thinking of getting a Custom Classic AC15, and I'm wondering if there are any other differences besides the speaker between the AC15CC1 for $600, and the AC15CC1X for $950? Wouldn't it be more cost effective to buy the cheaper one ($600), buy a separate Alnico Blue to drop in ($250), and sell the stock speaker? Anyone see any reason not to do this? Also, anyone know what the cab dimensions of the AC15CC's are? Cheers.