was thinking of replacing the engine in my 97 tahoe with 220,000 miles. it doesnt smoke or anything yet but i think i'de still like to do it. i was looking on the gmpp website and couldn't seem to fine a direct replacement. anyone know which crate motor would fit the bill? anyone know if my vortec heads will fit on any of those small block motors? i would like to reuse my intake and my vortec heads if possible.