without a doubt.
Best bang for the buck brotha...
Number of Springs Per Valve: Single
Outside Diameter of Outer Spring (in): 1.470 in.
Damper Spring Included: Yes
Spring Rate (lbs/in): 420 lbs./in.
Inside Diameter of Outer Spring (in): 1.075 in.
Inside Diameter of Inner Spring (in): 0.803 in.
Valve Spring Style: Standard
Coated: No
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 10 degree
Lock Groove Quantity: 1-groove
Lock Material: Steel
Quantity: Sold as a kit.
Notes:
Designed to upgrade Ford 289-351W engines with standard Twisted Wedge cylinder heads to Track Heat cylinder head specifications. Kit also includes valve seals and valve spring shims.
Valve Springs/Retainers, Track Heat, Single Springs, Steel Retainers, Steel Locks, Single Groove, Kit
TFS-2500200 $194.95
http://store.summitracing.com/partdetail.asp?autofilter=1&part=TFS-2500200&N=700+115&autoview=sku