I am looking at buying an 85 K5 Blazer, and would like to know what problems I may have when I have the emmisions tested. It has 35" tires(I think this is a problem but I am not sure). It has the 350 engine that is supposed to have all original equipment, but it doesn't have the catalytic converters(I know I will need to install these). What emmisions devices should I look for on the engine? It has glasspacks on it. Will these fail a visual inspection? Any advice would be appreciated. Thanks.