Howdy y'all! New (but old) 'round eye square guy' in NE Texas. She's a 1979 Royal Seirra 'R' code, K15. So far, we have rewired it, rebuilt the brakes, new body mounts, and 2" Rough country lift kit. We are also working on installing a 400 (R code) engine and a th400 transmission. She has Dana...