Another option is to go with a Cobra cam that came in the 93-95 Mustang Cobras. It has a bit more lift then a HO cam and a bit less duration. This works well in a 351 engine, good low end torque but with GT40 heads and 1.7RRs it has enough flow to make good power up to 5K+.
"Drag racing is for those people who don't know how to down shift and brake at the same time. "
DD '12 VW Jetta TDI, Race car '87 ITA 16V Scriocco
Cars owned: '86 Mustang GT, '92 Mustang LX, '93 Mustang Cobra "R" #58