I've built a chevy 350 with a group and my KA. everyones got there own spec's so do alot of research, because different pistons and components spec vary from brand to brand. triple check your specs and everybolt. Also check your buddies work and have your buddy check your work. Dont skimp on measuring tools.
its really not that hard if you take your time.
the only thing i regret about my KA is i didn't use enough RTV on my oil pan and it started to leak.
hope it helps and have fun!