well i do not think 11/32 stems are crazy if you are worry about the valves not stem down this fixes this. i have the ferrea 2.250 in think 2000 pros and they are stem down . but not any more than any thing i have seen. i do alot of dart big block head s with 11/32 valves in them and they are all about the same. just watch out on the cutting on the guides boss on the ex side the guides seats in the head it is wet guide so do not cut to much out around the guide this is were it seats in the head