6.1 cam in a 5.7

i will run a 6.1 intake...is the swap worth the effort? motor is on a stand, and i have a 4 position timing set. i plan to adv.4*. i have new 6.1 push rods and 6.1 springs. also this is an MDS 5.7 i will plug the solenoids, do i need 6.1 lifters?
thanks