If you just have to have a 4 in tube in crappie color's it's going to be a custom pour. I fish a lot of big baits down here and biggest I find on the shelf is 3 in and those are mostly slab slayers. Do fish some 3 in curly tail walleye baits from bass pro. Snake River on here is a sponsor and pours some really nice baits. Get in touch with him. He can pour you just about anything you want in any color combo you can think of. And he is as cheap as over the counter. I have some 2 in solid head tubes he poured for me that are fantastic big baits. More like 2 1/2 and bulky. About big as you need on a regular basis. And we catch big fish down here.