Which one? MSD AL6 or MSD AL6-2 for my stroker 418 (340)

I am with Rocco. AL-2 rev control on burn outs. I don't run a ballast . My distributor is a moper performance electronic, nothing special, set all in at 2500rpm. MSD 6AL. I use the Pertronix Flame Thrower HV coil (60,00 Volts!). I run my spark plug gap at.050. It runs around 7000-7200 rpm through the 1/4 traps. It fires hot! Burns clean! Idles without loading up.