im installing a novi 1000 on a friends 90 gt. wondering if the headgaskets should be changed for something else. The guy we got the blower from says to get the block o-ringed. What is involved with that and do you run a special headgasket. Second question is should we install an aftermarket ignition like an msd or can we use the factory unit. Was told i need an msd to take control the timing while under boost.

any info is greatly appreciated.