Home Forums Hunting & Shooting Hunting Rifles Ultralight stock fit a Ruger 77 Tang Safety Standard Rifle?)h)

Hi guys. Two questions really:

1). What were the differences between the ultralight and standard rifle on the tang safety Ruger 77 rifles? If the stock is the only difference, will it fit the standard rifle then. Serial number dates mine to 1989, 30-06 with a laminate stock.

2). Is there a marking on either variant rifle to confirm that it's standard or ultralight?