quote Twin Turbo Tiger:

I’m in process of rebuilding the motor, going to upgrade some parts in the motor and looks like i I’ll b adding a cage that will cert to 8.50 in the 1/4 mile and I’m looking to get the old girl to run 8:90’s.

I don’t think that I’ve ever seen all of the "specifics" on your build.
… wondering – are you running any kinda "cooling spray" after the turbos? Many of my turbo-Buick buddies swear by the methanol injection… on the GNs (and related cars) the nozzle(s) goes after [downstream of] the intercooler and allows for some serious extra power.