You will have trouble bolting your stock intake. You will have to buy an aftermarket intake made for the newer style heads (big bucks). You would get more bang for you buck to go ahead and buy a set of heads like the Edelbrock pre 1987 (about $1,000 assembled) and continue to use your intake.
Check out the Performer RPM either #6090 (angle plug heads), or 6089 (straight plug heads). These have 64cc chambers, and will bring that L98 to life. Plus they weigh less than the Vortec.
I have a set of the 6089 on a full roller 355 motor that was a monster on pump gas. You will be very happy with these.
I also have a set of cast iron Bow Tie Heads casting# (14011034) that will bolt direct to your intake and could be yours for about $400 plus shipping.........