.........1.7 roller rockers........

From what I've read here and on Moparts, they are junk. Plus, they are available on Ebay for $65 a set for Big Block (assuming you have a big block since I haven't seen them for SB). I wouldn't feel good at all about buying rockers that cheap.
http://www.ebay.com/itm/MOPAR-350-3...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

This thread starts about stainless ones, but read on...lots of folks unhappy with all types of CAT rockers.

http://board.moparts.org/ubbthreads...Main=5163950&Words=+als499&topic=&Search=true