Just curious who has built one in a stock block, and how hard did you lean on it.....We have a ton of the 512 builds running around here. Fastest one was mine at 9.70 at 138.5mph on pump gas which my little 400/512 has eclipsed to a 9.60...We even have one of the 526 builds running real strong in my buddies car, so the obvious question is how would the 543 fair?

http://store.440source.com/Stroker-Kits/products/3/

440 >> 543. (4.500" stroke/7.100" rod)

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk