Taco 2008 needs new springs and shocks .. info needed

Hello
I didn't know there was a suspension section . daa
The story is I have a Curtis snow plow that I use for home use.
This weighs in around 500lbs.
This season I noticed how low the front end is when I put the plow on.
I've only 270,000 in my Taco . yup stock front end.
I did replace the rear springs. No shocks
I would like to replace the springs and shocks up front .. shocks in the rear also.
I'm not looking to raise it just bring it back to stock height.
Is there some one that sells a combination for what I'm looking for?
Would they be stronger than stock springs?
Any info would be welcomed!
Thanks
Sean