I think a te-61 would be a better choice for your goals, the 51 would be pretty much maxed out at the 11teen range. What kind of converter are you planning to run? I am using a 9/11" that stalls at 3200rpm & a John Craig te-61 w/a PTE exhaust housing. Great street manners, spools like a beast (mid 1.7 60' launching off idle) and has plenty of gusto to run 10.7 ~ 10.6's @ 120+ mph.
Doug C.