If OP still interested in .. i installed
megan racing steering rack ends that offer more angle in relatively simple/reversible/cheap way (stock rack ends replacement with part of balljoint machined off to allow it to enter steering rack deeper till lock).
With wheel/tire i had (-3dg camber, 17x7.5ET47 225/45) they rubbed arch liner a bit at full lock (around +60deg past stock lock of steering wheel), so had custom made polyurethane spacer rings on each side to limit that extra angle (3mm thick, ID 23mm, OD 34mm). With one of such spacers per each side of course max angle is less then without, but still around 15-20deg more past stock lock of steering wheel. I guess, depending on wheel offset or spacer thickness one might get without such and with more max angle (such as for my narrower winter wheel & tire set, so when switching to that will remove rack spacers). Who knows, maybe also
verus limiter spacer set may fit, haven't tried, don't know it's sizes.
Youtube vid for those rack ends by someone else: [ame]https://www.youtube.com/watch?v=uHiana9zWNk[/ame]