Here's two cents worth of coilover advice from "coilover". We do a lot of scratch built chassis' and adapting IFS systems to existing factory frames. The horse is already out of the barn in your case with a completed aftermarket set up but the best money one can spend is to first "build" it on a computer and have the simulation put it through all it's paces. Disclaimer, I CAN'T do this but know people that can. The simulations are endless and can range from full suspension travel to check for any interference points to how the set up will react to various loads being carried. Here is a photo of what the computer indicated had to be done to a 56 Ford car frame for a Fatman MII ifs to work with no interference points. Zero problems when done in real time. A search will locate computer simulation services.

56 Ford frame mod to accept coilovers:
[img]https://i.postimg.cc/645yYMVQ/56-Ford-HT-003.jpg[/img]

Close up shot:
[img]https://i.postimg.cc/PN3xdzzm/56-Ford-HT-004.jpg[/img]


Evan