Are we setting ourselfs up to go the moon with all these changes, i personally can't see more than a couple hundreds with a change from a wishbone to an X-LINK, body roll who cares as long as the car hooks and goes straight when you're bracking racing. As far as i know there's no index, except in NHRA classes, and as long as the car is consistint, it's then up to the driver to win. I don't know what's good or bad but we run alnite long with a hard tail 235", small blk.on alchol injection 4.80's.
I guess if you have unlimited funds you should try everything just to say you done that been there, but that's not what wins in brk. racing.
JMO
Zip.