Super Charger question


99 1/2ton shorty Silverado 5.3 V8 with 87,000 miles
99 C5 LS1 sixspeed with 55,000 miles
Would it be better to wait until the current engines expire before installing super chargers on them?
Would any harm happen to high mileage vehicles to install Air Raid with spacer if they are too old for superchargers?
Thanks alot for your time
99 1/2ton shorty Silverado 5.3 V8 with 87,000 miles
99 C5 LS1 sixspeed with 55,000 miles
Would it be better to wait until the current engines expire before installing super chargers on them?
Would any harm happen to high mileage vehicles to install Air Raid with spacer if they are too old for superchargers?
Thanks alot for your time

