I had those GT40p heads w/matching headers, exhaust, cobra intake, 1.7 rockers, stock cam,pullies,
BBK TB-65 or 70mm, stock block rebuild with a clean port on the heads and intake and 373 gears and SPEED DENSITY!!!
No dyno numbers but went to the track 2 days after I had the motor in and tuned.. Went 13.4@ 105 on street tires. Full street car/daily driver at the time. I liked the setup and I got the heads,headers and intake as a package deal from MM&FF advertisement. Local speed shop did the block for me and a buddy put it together for me.
May do something similar with my 87 Gt vert... OR go with a fresh 351 w/ zero miles that is sitting in my buddies garage.