Is this Comp cam a good choice or not? 660/666 and @.050 254/260. Part #XR292. 13 to 1,Victor Jr,RHS 320 heads,850,ATI 9" 4000 stall,4.56,29" Hoosier,3900lb/driver. I wanted a 714/272 SR but there is varying opinions. It had a SFT 600/620 and @.050 266/276 with GM rectangle ports. The car has 25 gal of fuel put through it a season on the street. There is only a few SR BBC cars here so I would appreciate your thoughts. Thanks .