I just put a set on my '84 K5 Silverado w/ 4 inch lift... It was fairly easy, had to remove the bumpstop for the passenger side leaf spring and differential, and there is not room to put them back on but I think I'll be ok. I bought the headers from a buddy for $75, he was gonna use them and then he wrecked his truck so I got a pretty good deal on them! Ran 2.5 inch pipes back to some Raptor mufflers and they are dumping by the spring hangers right now.
Haven't got it running again yet, having ignition issues. there is a popping click noise everything 15 seconds when I hooked the batterey back up. Not sure whats going on there. Then I also have to get the dipstick tube back in and hook the plug wires back up in the correct order. I think I will have to make some boot protectors or something though cause it looks like the wires might burn up REALLY QUICK!
Any suggestions?