just as the title say's, what t4 flange turbo would be a good turbo to run with stock ad's and coustom tunes? i got a t4 flanged set of bellowed uppipes given to me and when i get some bill's all taken care of and start modding the truck again i want to run a t4 style turbo and was thinking something like a s400 or something like that. but want to know what turbo i could still DD with stock sticks but would also hold up to some stage 3's latter.....