Welcome to FBBO from NorCal Sierras
Get a better intake for the OE, EFI set up
(Like an Edelbrock air gap alum. manifold for that TB)
& drilled for the port injectors/TB Holley makes a great bolt on 52MM Throttle Body too (like $500+)
way better design, the big ol' Magnum barrel manifolds
they aren't really great for bottom end or top end
they supposedly had issues with the bottom coming loose too (I never had that issue)
there are kits to fix that if yours does
good luck
I have a bunch of bolt-ons,
AEM swirl spacer & 4" alum. intake/airbox w/AEM gauze filter
& a Hypertech tuner for 91 octane, a 3" cat back Delta 50 Series
on my 99 Dakota SLT 4x4 5.2lt Magnum
but the 1.7:1 (1.6:1 stock) Harlen Sharp roller rockers like $400+
(bolt on, & you use the stock pushrods too)
made the biggest difference, mine makes like 300+hp now