I had a 4.11 in mine and couldn't wait to get rid of it the engine was screaming all the time, now it has a 3.42 and i like it a whole lot better. It's a street car though.
Glad you told us before I ordered them.
Looks like that Har-215 spring is for a Camaro hood, must be lighter then a Monte and shorter which might make a difference too.
http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_339716_-1