It is well known these are by far the best front springs available for street (and track) for your Datsun Roadster. Perfect height/stiffness compromise. Firm ride, but not harsh. 
 
These are the real deal - developed and manufactured for Mike Young.
 
Unmatched ride, stability and comfort when paired with Sport Touring or "Koni-Medium" calibrated Bilsteins.  
 
These are absolutely the best spring for street and vintage racing-hands down.  
 
1000's of these genuine proven springs are on the road(For decades), why bother with unproven pirated copies?
 
In stock for immediate shipping.    DRP always brings you the best.
 
Free urethane spring isolator pair and height adjustment shims now included!