has anyone installed a new rack and pinion

ever since I bought my SS sl le 16.5 I noticed a little dead spot in the middle of steering ...I have learned how to drive it...aggressive ...lol....but I noticed mavel industries has a rack for $129 to your door....I have checked my ball joints and tie rod ends and sway bar bushings everything good....took a grease hypo and shot all the bushings and joints...but I was wondering if anyone has changed one....how difficult was it....I don't know if a alinement would help, it doesn't seem to drift driving or braking....idk if the new rack would even help....