92' 360 LA or 99' 5.2 Magnum

I've currently got a 99' 5.2 Magnum for my Duster project but, found a good deal on a 92' roller 360 LA. Should I pick up the 360 and sell the 5.2 or just keep what I got. I plan on setting the car up for street/strip and eventually blow thru turbo. Thanks for any help.