i will be putting the heads and intake from a 1994 Olds. Bravada into a 1991 Chevy blazer sport 2dr 2 wheel drive that has a 4.3 already in it, the blazer has the "z" block and the bravada has the "w" block, the blazer is a non vortec tbi and the bravada is a vortec cpi, I need to know if this swap will work or if I'm just pissing in the wind.