I have a 1991GT 5.0 with a vortech s-trim 10PSI and I am debating what block to go with when I rebuild it this winter. Should I keep the same block or sell it to pay for a new one. It only has 43,000 original miles on it. If I go with an aftermarket block are all the holes the same to hook up my supercharger and reuse my aftermarket intake and msd distributor? I was thinking four bolt mains maybe a 302 boss block or an SVO block would this work with most of my components on the 5.0L block?