i wouldnt put a ls6 cam in a 4x4 truck unless you have a stall.. sure its gonna pull big time up top above 4k, but its gonna have low tq below. With 4x4 you want some tq down low

a 206/212 114 is nice
i have the 210/218 114 and its fine but I lost a tad down low. I need a 2600 stall roughly and ill be good to go

a 206/212 should idle fine.. my 210/218 surged so i had to get nelson to tune my idle.. you can hear the 210/218 but its not that WOW to everyone or myself.. big sound doesnt come out untill you get up around 220's in cam size