Alterkation or K1?
Well I have went all in on HDK front end and simply love it. Plus during install me not being the best mechanic on the planet I called for some tech support and Denny talked to me until I was square. I loved the fact the owner picks up the phone and provides that level of customer service. And as a metal fabricator all of my life I can be super critical on the quality aspect of welding. HDK provided me with both an outstanding product and great service, and my A body can hang in a corner with ease. Not sure how it compares with others on cost but I would do the exact same thing again. Just my .02