I need rec's for two new seats to fit in a f150

[blane,j,&morgansmom]

Both my seats expire near january and I need to find new ones! I want them both to be harnessed. No flames, but I can not RF in my truck, the size just wont work. Currently they are in a Marathon and a (rush type thing) Scenera. My son will be three and weighs in at 44lbs and my nephew will be two in february and weighs 22lbs. The size of the seats can not be bigger than the marathon because there just isnt room. Any ideas? I want them both harnessed as long as possible, so high weight limits is a must. Oh and they sit side by side in the truck if that matters.