I have the Hooker Comp's (not Super Comp's) and they really sit up high but the car is lowered; with a 351w (auto) I've hit the speed bumps at the local supermarket lot a few times if going too fast on the downward part of the hump. Your 289 will sit lower that my W.
However, a large issue I don't see addressed is whether you have p/s or not. My Hooker's do not need the "hated" drop bracket but I'm not sure if it's due to the higher deck or the style of header.
However, a large issue I don't see addressed is whether you have p/s or not. My Hooker's do not need the "hated" drop bracket but I'm not sure if it's due to the higher deck or the style of header.