Love the car and the color !! The person stating the stamped steel rockers does not know what he is talking about ! I've checked the stamped steel rockers and the ratios average between 1.46 and 1.48. The roller tip rockers will take the ratio to an accurate 1.52 or 1.65 resulting in accurate valve lift and duration ='s more power , less friction. Only use the 1.65's if you have ported the heads. The rockers you are looking at are made in China ! I can offer you USA made Competition Cams rockers for $ 139.00 ! Part # 1451-16 Best deal in the country, much better steel ! They come with grooved rocker balls for superior oiling and 3/8's & 7/16's nuts to work on either type on rocker stud.

Pontiac Gregg
1-303-776-0877
Visa, M/C