I wanna drag race----help
I would use a stroker kit with a forged crank and scat I beam 4340 rods...
properly geared and cammed....a stroked small block should get into the mid to low 12 with ease...with either reworked stock heads or eddy heads...... might want to look at the new RHS/Indy cast iron heads.
dont know about 4 speeds.....but driveshaft and rear end should be ok