I have an 83' k20 6.2l diesel suburban. I'm looking for a full grille guard for the front but i can't find anything for <1992. It seems like no body made them for the 1974-1991 model. There has to be something out there for $400.00 or less. Also, I would like to swap out my bench seats. How much work would I be looking at to swap mine for some newer model suburban seats? Would i have to drill holes and replace mounts?