mine : 69 , 250 - I6 motor , was a stock p/g , switched over to a stick-shift .. Borg/Warner T 5 one year ago.
I used all stock Nova manual "clutch linkage" and bought my change-over kit from "Chevy2Only".
Installed Feb-March 2018 ...... BEEN WORKING GREAT --- One of My Best up-grades to my Nova.
All the stock ( z-bar, pedals, sbc bellhousing, sbc flywheel (153 teeth), stock Nova "Throw-out-bearing & stock Pilot bushing" ALL work , also, used the "stock p/g trans (rubber) mount, & used the stock p/g trans 'slip-yoke' .
I even used the stock p/g transmission 'crossmember' ...... I DID DO a small Mod -- to the crossmember (diy -- very easy -- and works GREAT.
You WILL have to CUT your DRIVE-Line ..... about 2" and rebalanced.
I DO HAVE Numbers that I used ...... this is for a Borg/Warner T 5 from a GMC S-15 Sonoma 2wd p/u.
I'd use the simple "stock Nova Manual clutch linkage" .