454 HEADERS for \'92 engine into \'86 Sub Are there any after market headers that will fit with a '92 454 dropped into a '86 Suburban. Will it work to just order them for a '86 as the 3/4 ton had the option for a 454? This is a 1/2 ton sub. I have the 4 inch lift and plan to install missouri offroad's crossmember. I plan to do this when I swap it in for my 350.