I use the Calvert's on all four corners of the stocker along with their mono spring and caltracs. Best 60' has been 1.45@3380lbs.

2013 NHRA D4 Stock Champ
#4 in the World IHRA Stock
2x IHRA Div.4 Stock Champ
14x Track Champ
All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837