If I know Darren's tastes, it will be for HORSEPOWER.
Also dune play and heavy ass engines just dont go together.
LS LS LS LS. PS NotSoPc, a new 5.3 even will shmoke a tbi 454 towing or playing.
1987 454 = 230HP. 700 lbs
newer cheapo 5.3 = 300-350hp, 500lbs for iron truck engine
So 200 lbs heavier and 100hp less is much better huh?
That 5.3 (or any of the new SBCs) have WAY better cranks, rods, internal fasteners, roller cam, decent pistons, etc.
The jetboat guys have had great luck tossing a stock cheap 5.3 in a beating the **** out of them. Jetboats love TQ and RPMs.
Resale will be better/easier with the modern engine too.
Just my .02