I've been looking at rebuilding the bottom end on the 350 in my 1990 K5 and slapping on some vortec heads and Edlebrock TBI/vortec intake. Pricing out rebuilding my old motor and the nickel and dime stuff like new head bolts, gaskets, pushrods, etc is looking real expensive. For the cost of just the vortec heads I can get a complete low mileage vortec 350 out of the junkyard. So my question; will there be any difference between the putting in a complete vortec 350 with the edlebrock intake and my TBI vs my old TBI block with Vortec parts? I assume the bottom end is all the same as far as motor mounts, flywheel, etc.