it all comes down to aftermarket support. we are wayyyyyy behind the pace. if you could get a plug and play set up for cheap you would see alot more fuel injected new hemi's and magnum engines running around in our old cars.
And be happy we can get what we can get. When I started, there was very, very little. Brake upgrades were stock larger discs and Addco sway bars, no Alterktions, Magnum Force, Edelbrock or LA-X heads, Dougs headers. TTI's only header was a big block swap header and Year One was the only place that you could get restoration parts.