Rep Sorcery widebody kit install question

[Anbukao]

Hi ive been looking into a replica sorcery widebody kit and im hearing alot of bad fitment issues, but due to funds restraint im going with the rep. Anyone know how bad or hard it is to diy, (first hand experience) i am good with my hands but never worked with polymers but very fast learner. Time is not an issue, but would like to know what im getting myself into.