Fastest Duster on stockish suspension?

Nice replies Guys.
I would love to go smallblock but I don’t have any go faster goodies at the moment.
Some guys here are into 408’s now, BUT they seem to have a very short ‘drag life’...
So as it’s a smallish engine compartment I guess low deck is the way forwards for me!
Gonna be ‘old skool’ 451ci iron heads and fingers crossed lol...

Many thanx for replies and ideas on this subject.
550 real world horsepower is needed methinks?

Hopefully a 30 spline 8 3/4 will ‘take the strain???